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Federal Reserve Bank of Cleveland
period over which auto loans are made,
thus minimizing short-term strains on
income and cash flow. Indeed, paralleling
an aging auto stock is a lengthening of
the maturity of average new-car loans
from roughly 36 months in 1974 to 46
months in 1982 (see table I). An aggregate increase in borrowing maturities for
new-car loans gives households partial
relief from rising interest rates and newcar prices, although total user costs
on average willincrease over the life
of the car.
Although not actually considered user
costs, the operating costs of automobiles,
particularly gasoline prices, have been
discussed at length in the auto-demand
literature over the past few years. For the
most part, the evidence supports what
economic theory would predict. Increases
in gasoline prices tend to reduce the
overall demand for cars, especially the
demand for larger, less fuel-efficient
models. Consequently, energy price increases have contributed to the number
of smaller, foreign autos currently mushrooming in the United States. The evidence
also suggests that the sensitivity of newcar demand to changes in gasoline costs
is greater than the impact of user costs
on new-car demand. And, as does weakness in disposable income, higher gasoline prices increase the demand for used
cars relative to new cars.5 In sum, Americans have adjusted to recessionary
income loss and gasoline price increases
with similar strategies: we have decreased
our total demand for new cars, while
increasing our purchases of imports and
the age of the existing auto stock.
Auto Sales in 1983

There are many ingredients necessary
to an auto sales recovery in 1983. The
long-term growth in new-car sales from
new ownership is probably already on the
wane. The increase in the number of
Americans aged 20 years to 40 years is
slowing, willpeak around 1991, and will
decline thereafter. 6 The rapid growth of
5. Tishler, "The Demand for Cars ... ," p. 188.
6. William A. Cox, "Changing Consumption Patterns," American Demographics, vol. 3, no. 5 (May
1981), p. 18.

individual households that occurred in the
1970s also should slow in the 1980s.
These factors can limit the growth of
additions to the U.S. auto stock in the
coming years and consequently reduce
the trend of new-owner auto sales. For
these reasons, the U.S. auto market for
new cars might never fully recover to the
sales levels it once enjoyed. The trend
component of the replacement demand
for new autos has been on the decline for
several years, and a sudden reversal in
this aging behavior does not appear likely.
However, the cyclical willingness of consumers to retain older cars should stabilize and eventually generate a faster auto
scrappage rate, as car stocks reach an
age where replacement can no longer be
deferred. According to one analysis, the
demand for new autos to replace aging
autos is already building; over the next
few years such replacement could add as
many as 1 million additional units annually
to new-car sales.7
A prerequisite for recovery in auto
sales is persistent real income growth
throughout the year. As labor markets
firm, the prospects for such income
strengthening are improving. Moreover,
strength in the 1983 new-car market
requires moderation in the pace of gasoline price advances. Although political
events in the Middle East and the decisions of OPEC are uncertain, the current
state of the oil markets suggests that
energy supplies would be abundant in
1983. In January 1983, the average retail
price per gallon of gasoline fell to $1.16,
nearly $0.14 below that of July 1982 and
its lowest level in three years. Many oilmarket analysts anticipate continuing
gasoline price retreats until summer.
In addition to the necessary conditions
of income strength and gasoline price restraints, another decline in relative prices
of new cars would contribute to a sustained auto recovery. For the 1983 model
year, General Motors announced an average price increase of only 1.9 percent
over similar 1982 models, while the prices
7. Susan Weller Burch, The Aging of the U.S. Auto
Stock: Implications for Demand, Working Paper 26
(Board of Governors of the Federal Reserve System, January 1983).

Table 2 Auto-Sales Forecasts: 1983
In millions of units; as of March 1983
9.3a

Chase Econometrics
Conference Board
Data Resources, Inc. .
Econoviews International Inc
Eggert Economic Enterprises
Evans Economics ...........•..........
Goldman, Sachs Co. .
UCLA Business Forecast
Univ. of Michigan M.Q.E.M
Wharton Econometric Forecast
43 forecast composite

9.3
9.0
10.5
10.0
B.8
9.2
9.1

9.0
9.6
;

9.3

a. February data.
SOURCES: Blue Chip Economic Indicators and
Automotive News. Data reprinted bypermission
~ of Eggert Economic Enterprises, Inc., Sedona,
Arizona 86336.

r

of Ford Motor Company products increased
less than 1 percent over the last model
year. More importantly, given the recognition of user-cost importance to newauto demand, the path of interest rates
enters into the prognosis for new-car
sales in 1983. Consumer lending rates have
been falling since autumn 1982, and a conFederal Reserve Bank of Cleveland
Research Department
P.O. Box 6387
Cleveland,OH 44101

tinuation of this trend certainly improves
prospects for auto sales in 1983.
In conclusion, the variables for an auto
recovery in 1983 are in place, and most
market analysts apparently agree (see
table 2). The least optimistic forecast calls
for total 1983 auto sales of 8.8 million
units, an Increase of 10 percent from the
1982 sales performance of 8.0 million
autos, but well below pre-1980 sales. On
the more optimistic side, some auto-sales
forecasts for 1983 are above the 10million unit level, which would represent
one of the stronger auto-sales comebacks
in many years. An average of 43 market
forecasts yields an expected 9.3-million
unit sales pace for the 1983 calendar
year, about a 16 percent improvement
over the unit-sales performance for 1982
and a decided gain from the dismal auto
markets of the past three years.
Predicting the future is a hazardous
business, particularly in today's auto
market. The strength of such forecasts
resides precariously in the ability of labor
markets to improve real consumer incomes during the year. Throwing this
caution aside, it would appear that auto
dealers should enjoy the 1983 sales year,
with even stronger sales to follow.
BULK RATE
U.S. Postage Paid
Cleveland, OH
Permit No. 385

Correction Requested: Please send corrected mailing label to the Federal
Reserve Bank of Cleveland, Research Department, P.O. Box 6387, Cleveland, OH 44101.

Address

March 7, 1983

~19nomic Commentary
Issues in the 1983 Auto-Sales Outlook
by Michael F. Bryan
Since the late 1970s, the U.S. auto
market has suffered a severe decline.
Total auto sales (domestic and foreign)
have fallen from the highs of over 11 million units in 1977 and 1978 to an anemic
average of 8.5 million units since 1980.
The sales performance of U.S. autos has
become one of the business horror
stories of the 1980s, as imports consistently have captured a greater share of
the shrinking new-car market. Accompanying the sales dive of U.S. autos is a
corresponding dip in the capacity utilization rate of U.S. motor vehicle industries;
this measure fell from 99 percent in 1977
to approximately 60 percent in 1982.
Total employment in these industries
declined nearly 27 percent over the same
period. With an industry so decimated, it
has been difficult for market analysts to
predict the level of auto sales in 1983.
After examining the sources of new-car
demand, we still question whether the
recent weakness in the auto industry is
temporary or whether it represents a
long-run downward adjustment that could
continue indefinitely.
Until recent years, auto sales were
influenced primarily by changes in the
population, the existing stock of autos,
real disposable income, and time. Since
the late 1970s, however, auto sales forecasts that relied on such traditionally
accurate indicators have been off the
mark. Inflation, the frequency of recessions, historically high interest rates, gasoline shortages and their accompanying
price increases, and changing household
demographics have collectively muddled
a market model that in previous years
was reasonably predictable. In 1982, for
example, total auto sales were 2.5 million
units less than estimated by many industry analysts.

An Aging Auto Stock

Changes in the pattern of consumer
auto buying have drastically altered the
profile of the U.S. auto market (see
table I). The small-car market share of
total domestic sales rose from 49.2 percent
in 1974 to 63.5 percent in 1982. Foreign
competitors seem to hold an advantage in
the production and marketing of these
smaller models, consequently increasing
their importance as a source of new
automobiles. In 1974, imports commanded 15.9 percent of the U.S. new-car
market, a share that has since risen to
almost 28 percent.
The demand for new cars results from
two general sources: (1) additions to the
stock of autos (new ownership) and (2)
replacement of the existing auto stock.
Additions to the auto stock result from
changes in taste, in real personal income,
and especially in demographic characteristics. An increase in the population of
driving age, such as the aging of the babyboom cohort, expands the rate of additions to the auto stock as more people
require transportation. Similarly, since
1970 single-person households have
become more prominent, further increasing the demand for cars. Moreover, the
number of wage earners per household
has risen, because large numbers of
women have entered the labor force as
both primary and secondary wage
earners. Such demographic changes have
greatly accelerated the rate of additions
to the auto stock.
The author is an economic analyst with the Federal
Reserve Bank of Cleveland.
The views stated herein are the author's and not
necessarily those of the Federal Reserve Bank of
Cleveland or of the Board of Governors of the
Federal Reserve System.

Table 1 The U.S. Auto Market:

Year

New-car
sales,
millions

Import car
share,
percent

1974-82
Age of
stock,
years

Average
price,
dollars

CPI average price,
dollars

Average flLoan
nance rate, maturity,
percent
months

1974

8.9

15.9

5.7

4,390

4,390

12.6

35.7

1975

8.6

18.3

6.0

4.750

4,768

13.1

37.6

1976

10.1

14.8

6.2

5,470

5,068

13.2

38.8

1977

11.2

18.6

6.2

6,120.

5.336

13.2

40.7

1978

11.3

17.7

6.3

6,470

5,742

13.2

43.0

1979

10.6

21.9

6.4

6,950

6.196

13.5

44.3

1980

9.0

26.7

6.6

7.340

6,691

14.8

44.7

1981

8.5

27.3

6.9

8,850

7,100

15.9

45.2

1982

8.0

27.9

7.2

9,750

7,369

15.8

46.0

While demographic occurrences have
been gradual and hence predictable in
terms of impact on new-car sales, the
replacement demand for autos has
behaved more erratically in recent years.
The number of existing cars affects the
frequency of auto replacement in that a
larger stock of existing cars generates a
larger replacement demand. Yet, consumers can vary the timing of auto replacement, within broad limits, by exercising their option to retain their current
autos. Replacement demand for new
cars, sensitive to both trend and cyclical
variations in economic activity, is consequently more difficult to predict.
Perhaps the most dramatic feature of
the changing U.S. auto market is the
speed at which the auto stock has ageda consequence of weakening auto
replacement demand. Between 1974 and
1982, the average age of the U.S. auto
stock rose from 5.7 years to 7.2 years.
Some market analysts speculate that this
aging stems from improvements in automobile quality and changes in driving laws
(such as lowered speed limits), which
have increased new-car durability. Analysts also argue that cyclical influences
have played an important role in the autostock aging process. The cyclical component of replacement demand for new cars
is often termed unfulfilled, or pent-up,
auto demand. U.S. consumers seem to
respond to what they perceive as a tem-

porary phenomenon in the economy by
postponing new-car purchases beyond
trend levels. Proponents of pent-up
demand scenarios expect that an economic recovery that revives consumer
confidence potentially could flood newcar markets with replacement auto
demand as buyers revert to a long-run
sales path. In the forefront of these cyclical determinants of replacement new-car
sales are real personal incomes.

Income and Demand
Auto analysts long have regarded
income as the most influential variable in
the determination of auto sales. In the
language of economics, auto sales are
income elastic, i.e., a 1 percent decline
in income causes more than a 1 percent
decline in new-car sales. The link
between income and new-car sales has
never been precisely established. In the
past, demand models for new cars
assumed that the variable considered by
consumers in the purchase of a new car
was the current level of real disposable
personal income. Early estimates of
income elasticities based on current levels
of per capita income fall within the wide
range of 1.5 to 4.6; in other words, a 1
percent increase (decrease) in the current
level of real disposable income has been
associated with a 1.5 percent to 4.6 percent increase (decrease) in the total

volume of new-car sales. 1 A sizable range
of income elasticities arises from differences in estimation sampling intervals,
methodology, and variable specification in
estimated models.
More recently, economists have argued
that decisions to buy autos are based on
a lifetime earnings stream, or a consumer's permanent income. Permanent
income usually is measured as a distributive combination of current and past
income values. Inasmuch as this measure
distributes the impact of income over
current and past earnings, these models
react more slowly to cyclical fluctuations.
Income elasticities of new-car sales
derived from permanent income models
have yielded estimates between 1.0 and
3.6.2 There is no evidence that autodemand models have been significantly
improved in terms of forecast accuracy
by the shift from current income levels to
a permanent income approach, nor do
the income-elasticity estimates appear to
be unusually different. Regardless of the
income approach used, estimates of
income elasticities suggest eroding
demand for new cars in the United States
over the last three years can be explained
in part as a cyclical response to slow
income growth during the recessions of
1980 and 1981-82.
There seems to be a definite correlation between income growth and the size
of an automobile purchased.' Simply,
consumers in the aggregate have
adjusted their new-car purchase decisions
for income weakness and job insecurity
by buying smaller, more fuel-efficient
cars. More importantly, this evidence also
suggests that slow income growth not
only reduces the total demand for cars by
consumers, but it also weakens new-car
1. Daniel B. Suits. "The Demand for New Automobiles in the United States 1929·1956." Review of
Economics and Statistics. vol, 40 (August 1958), pp,
273·80.
2. Alan C. Hess, "A Comparison of Automobile
Demand Equations." Econometrica, vol, 45. no. 3
(April 1977). pp. 683-701; and Asher Tishler. "The
Demand for Cars and the Price of Gasoline: The
User Cost Approach." Review of Economics and
Statistics, vol. 64, no. 2 (May 1982). pp, 184·90.
3. Tishler. "The Demand for Cars ....•. p. 188.

markets relative to used-car markets-an
indication that the substitutability of new
cars and used cars varies over the business cycle. A shift from new-car markets
to used-car markets tends to increase the
ase of the U.S. auto stock during periods
of recession and puts upward pressure
on the prices of used cars.

Chart 1 New-Car Price Comparisons
Thousands

a

of dollars

Costs and Demand
Sticker shock has become a popular
term to describe consumer reaction to
the prices of new cars. While the high
prices of new cars certainly have contributed to the decline in new-car demand in
recent years, the impact of new-car
prices probably has been overstated. The
relative price of new cars probably has
been falling over a long period of time and
particularly since 1978. In fact, the prices
of new domestic cars have risen less than
the rate of inflation as measured by the
consumer price index (CPI) during 14 of
the past 15 years. From a price perspective, it is necessary to hold the mix and
quality of the new-car market constant to
isolate the influence of price change.
Although this procedure (reflected in CPImeasured new-car prices) gives a more
precise measure of price change, it does
not accurately reflect the transactions, or
purchase, price of new cars. The transactions price of cars paid by consumers
may be much larger than CPI data indicate if significant changes in new-car quality and style occur over a measurement
period. Chart 1 shows the average price
of new cars paid by U.S. consumers and
the average price represented by changes
in the CPI for new cars. The differences
between these two price measures are an
indication of the new-car cost increases
associated with changes in style and
improvements in new-car quality, such as
fuel-efficiency and pollution-control
equipment. The average price of a new
car in 1982 was $9,750, or $2,381 greater
than a CPI-based new-car price. The 1982
price suggests that as much as 40 percent
of the increase in new-car prices since
1974 resulted from improvements to car
quality and changes in style.
Compared with nondurable goods, for
which consuming and buying are fundamentally the same, a car is a store of

oL-__ ~~
1974

1975

__ ~
1976

~
1977

-L

~

1978

1979

~

L-__~

1980

1981

1982

a. New-car prices include domestic and foreign models. The CPI average new-car price represents the
consumer new-car price index (1974 = lOO), multiplied by the average price of new cars in 1974.

transportation services. Viewed this way,
the cost of using these rendered services
is more important to potential consumers
than the car's purchase price. Economists have called such costs user costs,
where new-car prices are treated as an
expense over the expected life of a car
rather than an expense absorbed entirely
at the time of purchase. Because a car is
essentially a transportation asset, usercost methods adjust for resale value
when the asset eventually is sold in a
secondary market as a used car. Therefore, an increase in car prices does not
translate entirely 'into user costs, especially if a large share of the price increase
is quality-induced and either increases the
car's value in the resale market or allows
consumers to hold their cars for a greater
length of time. An increase in car prices
might slow the pace of new-car sales, but
only to the extent that the increase raises
user costs in terms of the depreciation
level or additional interest costs.
The user-cost approach includes measures of the market rate of interest to
represent the earnings opportunities
foregone when a person makes a cash
outlay for a car. Currently, about 75 percent of new-car purchases are financed,

which closely links the interest component of user costs to consumer lending
rates. New-car loan rates have risen to
average quarterly peaks of 14.8 percent
in 1980, 15.9 percent in 1981, and 15.8
percent in 1982. A high real rate of interest raises the user cost to consumers and
hence reduces new-car demand. As
interest rates increase, however, the user
cost of all durable goods rises. Other
durable goods compete for a share of
household wealth, and some studies have
argued that a shift from other durablegoods expenditures into new-car markets
occurs as interest rates rise.4 The net result of rising user costs on new-car demand
from both pnce and interest-rate sources
is negative hut small relative to the
sensitivity of income to new-car demand.
A related issue to the cost considerations of buying a new car is affordability. While a car might be desired at a
given income-stream and over-the-life
cost, the periodic monthly payments
might be too prohibitive for certain
household budgets to absorb. One way
consumers can reduce the affordability
constraint is to lengthen the borrowing
4. Hess. "A Comparison ...••.

p,

698.

Table 1 The U.S. Auto Market:

Year

New-car
sales,
millions

Import car
share,
percent

1974-82
Age of
stock,
years

Average
price,
dollars

CPI average price,
dollars

Average flLoan
nance rate, maturity,
percent
months

1974

8.9

15.9

5.7

4,390

4,390

12.6

35.7

1975

8.6

18.3

6.0

4.750

4,768

13.1

37.6

1976

10.1

14.8

6.2

5,470

5,068

13.2

38.8

1977

11.2

18.6

6.2

6,120.

5.336

13.2

40.7

1978

11.3

17.7

6.3

6,470

5,742

13.2

43.0

1979

10.6

21.9

6.4

6,950

6.196

13.5

44.3

1980

9.0

26.7

6.6

7.340

6,691

14.8

44.7

1981

8.5

27.3

6.9

8,850

7,100

15.9

45.2

1982

8.0

27.9

7.2

9,750

7,369

15.8

46.0

While demographic occurrences have
been gradual and hence predictable in
terms of impact on new-car sales, the
replacement demand for autos has
behaved more erratically in recent years.
The number of existing cars affects the
frequency of auto replacement in that a
larger stock of existing cars generates a
larger replacement demand. Yet, consumers can vary the timing of auto replacement, within broad limits, by exercising their option to retain their current
autos. Replacement demand for new
cars, sensitive to both trend and cyclical
variations in economic activity, is consequently more difficult to predict.
Perhaps the most dramatic feature of
the changing U.S. auto market is the
speed at which the auto stock has ageda consequence of weakening auto
replacement demand. Between 1974 and
1982, the average age of the U.S. auto
stock rose from 5.7 years to 7.2 years.
Some market analysts speculate that this
aging stems from improvements in automobile quality and changes in driving laws
(such as lowered speed limits), which
have increased new-car durability. Analysts also argue that cyclical influences
have played an important role in the autostock aging process. The cyclical component of replacement demand for new cars
is often termed unfulfilled, or pent-up,
auto demand. U.S. consumers seem to
respond to what they perceive as a tem-

porary phenomenon in the economy by
postponing new-car purchases beyond
trend levels. Proponents of pent-up
demand scenarios expect that an economic recovery that revives consumer
confidence potentially could flood newcar markets with replacement auto
demand as buyers revert to a long-run
sales path. In the forefront of these cyclical determinants of replacement new-car
sales are real personal incomes.

Income and Demand
Auto analysts long have regarded
income as the most influential variable in
the determination of auto sales. In the
language of economics, auto sales are
income elastic, i.e., a 1 percent decline
in income causes more than a 1 percent
decline in new-car sales. The link
between income and new-car sales has
never been precisely established. In the
past, demand models for new cars
assumed that the variable considered by
consumers in the purchase of a new car
was the current level of real disposable
personal income. Early estimates of
income elasticities based on current levels
of per capita income fall within the wide
range of 1.5 to 4.6; in other words, a 1
percent increase (decrease) in the current
level of real disposable income has been
associated with a 1.5 percent to 4.6 percent increase (decrease) in the total

volume of new-car sales. 1 A sizable range
of income elasticities arises from differences in estimation sampling intervals,
methodology, and variable specification in
estimated models.
More recently, economists have argued
that decisions to buy autos are based on
a lifetime earnings stream, or a consumer's permanent income. Permanent
income usually is measured as a distributive combination of current and past
income values. Inasmuch as this measure
distributes the impact of income over
current and past earnings, these models
react more slowly to cyclical fluctuations.
Income elasticities of new-car sales
derived from permanent income models
have yielded estimates between 1.0 and
3.6.2 There is no evidence that autodemand models have been significantly
improved in terms of forecast accuracy
by the shift from current income levels to
a permanent income approach, nor do
the income-elasticity estimates appear to
be unusually different. Regardless of the
income approach used, estimates of
income elasticities suggest eroding
demand for new cars in the United States
over the last three years can be explained
in part as a cyclical response to slow
income growth during the recessions of
1980 and 1981-82.
There seems to be a definite correlation between income growth and the size
of an automobile purchased.' Simply,
consumers in the aggregate have
adjusted their new-car purchase decisions
for income weakness and job insecurity
by buying smaller, more fuel-efficient
cars. More importantly, this evidence also
suggests that slow income growth not
only reduces the total demand for cars by
consumers, but it also weakens new-car
1. Daniel B. Suits. "The Demand for New Automobiles in the United States 1929·1956." Review of
Economics and Statistics. vol, 40 (August 1958), pp,
273·80.
2. Alan C. Hess, "A Comparison of Automobile
Demand Equations." Econometrica, vol, 45. no. 3
(April 1977). pp. 683-701; and Asher Tishler. "The
Demand for Cars and the Price of Gasoline: The
User Cost Approach." Review of Economics and
Statistics, vol. 64, no. 2 (May 1982). pp, 184·90.
3. Tishler. "The Demand for Cars ....•. p. 188.

markets relative to used-car markets-an
indication that the substitutability of new
cars and used cars varies over the business cycle. A shift from new-car markets
to used-car markets tends to increase the
ase of the U.S. auto stock during periods
of recession and puts upward pressure
on the prices of used cars.

Chart 1 New-Car Price Comparisons
Thousands

a

of dollars

Costs and Demand
Sticker shock has become a popular
term to describe consumer reaction to
the prices of new cars. While the high
prices of new cars certainly have contributed to the decline in new-car demand in
recent years, the impact of new-car
prices probably has been overstated. The
relative price of new cars probably has
been falling over a long period of time and
particularly since 1978. In fact, the prices
of new domestic cars have risen less than
the rate of inflation as measured by the
consumer price index (CPI) during 14 of
the past 15 years. From a price perspective, it is necessary to hold the mix and
quality of the new-car market constant to
isolate the influence of price change.
Although this procedure (reflected in CPImeasured new-car prices) gives a more
precise measure of price change, it does
not accurately reflect the transactions, or
purchase, price of new cars. The transactions price of cars paid by consumers
may be much larger than CPI data indicate if significant changes in new-car quality and style occur over a measurement
period. Chart 1 shows the average price
of new cars paid by U.S. consumers and
the average price represented by changes
in the CPI for new cars. The differences
between these two price measures are an
indication of the new-car cost increases
associated with changes in style and
improvements in new-car quality, such as
fuel-efficiency and pollution-control
equipment. The average price of a new
car in 1982 was $9,750, or $2,381 greater
than a CPI-based new-car price. The 1982
price suggests that as much as 40 percent
of the increase in new-car prices since
1974 resulted from improvements to car
quality and changes in style.
Compared with nondurable goods, for
which consuming and buying are fundamentally the same, a car is a store of

oL-__ ~~
1974

1975

__ ~
1976

~
1977

-L

~

1978

1979

~

L-__~

1980

1981

1982

a. New-car prices include domestic and foreign models. The CPI average new-car price represents the
consumer new-car price index (1974 = lOO), multiplied by the average price of new cars in 1974.

transportation services. Viewed this way,
the cost of using these rendered services
is more important to potential consumers
than the car's purchase price. Economists have called such costs user costs,
where new-car prices are treated as an
expense over the expected life of a car
rather than an expense absorbed entirely
at the time of purchase. Because a car is
essentially a transportation asset, usercost methods adjust for resale value
when the asset eventually is sold in a
secondary market as a used car. Therefore, an increase in car prices does not
translate entirely 'into user costs, especially if a large share of the price increase
is quality-induced and either increases the
car's value in the resale market or allows
consumers to hold their cars for a greater
length of time. An increase in car prices
might slow the pace of new-car sales, but
only to the extent that the increase raises
user costs in terms of the depreciation
level or additional interest costs.
The user-cost approach includes measures of the market rate of interest to
represent the earnings opportunities
foregone when a person makes a cash
outlay for a car. Currently, about 75 percent of new-car purchases are financed,

which closely links the interest component of user costs to consumer lending
rates. New-car loan rates have risen to
average quarterly peaks of 14.8 percent
in 1980, 15.9 percent in 1981, and 15.8
percent in 1982. A high real rate of interest raises the user cost to consumers and
hence reduces new-car demand. As
interest rates increase, however, the user
cost of all durable goods rises. Other
durable goods compete for a share of
household wealth, and some studies have
argued that a shift from other durablegoods expenditures into new-car markets
occurs as interest rates rise.4 The net result of rising user costs on new-car demand
from both pnce and interest-rate sources
is negative hut small relative to the
sensitivity of income to new-car demand.
A related issue to the cost considerations of buying a new car is affordability. While a car might be desired at a
given income-stream and over-the-life
cost, the periodic monthly payments
might be too prohibitive for certain
household budgets to absorb. One way
consumers can reduce the affordability
constraint is to lengthen the borrowing
4. Hess. "A Comparison ...••.

p,

698.

Table 1 The U.S. Auto Market:

Year

New-car
sales,
millions

Import car
share,
percent

1974-82
Age of
stock,
years

Average
price,
dollars

CPI average price,
dollars

Average flLoan
nance rate, maturity,
percent
months

1974

8.9

15.9

5.7

4,390

4,390

12.6

35.7

1975

8.6

18.3

6.0

4.750

4,768

13.1

37.6

1976

10.1

14.8

6.2

5,470

5,068

13.2

38.8

1977

11.2

18.6

6.2

6,120.

5.336

13.2

40.7

1978

11.3

17.7

6.3

6,470

5,742

13.2

43.0

1979

10.6

21.9

6.4

6,950

6.196

13.5

44.3

1980

9.0

26.7

6.6

7.340

6,691

14.8

44.7

1981

8.5

27.3

6.9

8,850

7,100

15.9

45.2

1982

8.0

27.9

7.2

9,750

7,369

15.8

46.0

While demographic occurrences have
been gradual and hence predictable in
terms of impact on new-car sales, the
replacement demand for autos has
behaved more erratically in recent years.
The number of existing cars affects the
frequency of auto replacement in that a
larger stock of existing cars generates a
larger replacement demand. Yet, consumers can vary the timing of auto replacement, within broad limits, by exercising their option to retain their current
autos. Replacement demand for new
cars, sensitive to both trend and cyclical
variations in economic activity, is consequently more difficult to predict.
Perhaps the most dramatic feature of
the changing U.S. auto market is the
speed at which the auto stock has ageda consequence of weakening auto
replacement demand. Between 1974 and
1982, the average age of the U.S. auto
stock rose from 5.7 years to 7.2 years.
Some market analysts speculate that this
aging stems from improvements in automobile quality and changes in driving laws
(such as lowered speed limits), which
have increased new-car durability. Analysts also argue that cyclical influences
have played an important role in the autostock aging process. The cyclical component of replacement demand for new cars
is often termed unfulfilled, or pent-up,
auto demand. U.S. consumers seem to
respond to what they perceive as a tem-

porary phenomenon in the economy by
postponing new-car purchases beyond
trend levels. Proponents of pent-up
demand scenarios expect that an economic recovery that revives consumer
confidence potentially could flood newcar markets with replacement auto
demand as buyers revert to a long-run
sales path. In the forefront of these cyclical determinants of replacement new-car
sales are real personal incomes.

Income and Demand
Auto analysts long have regarded
income as the most influential variable in
the determination of auto sales. In the
language of economics, auto sales are
income elastic, i.e., a 1 percent decline
in income causes more than a 1 percent
decline in new-car sales. The link
between income and new-car sales has
never been precisely established. In the
past, demand models for new cars
assumed that the variable considered by
consumers in the purchase of a new car
was the current level of real disposable
personal income. Early estimates of
income elasticities based on current levels
of per capita income fall within the wide
range of 1.5 to 4.6; in other words, a 1
percent increase (decrease) in the current
level of real disposable income has been
associated with a 1.5 percent to 4.6 percent increase (decrease) in the total

volume of new-car sales. 1 A sizable range
of income elasticities arises from differences in estimation sampling intervals,
methodology, and variable specification in
estimated models.
More recently, economists have argued
that decisions to buy autos are based on
a lifetime earnings stream, or a consumer's permanent income. Permanent
income usually is measured as a distributive combination of current and past
income values. Inasmuch as this measure
distributes the impact of income over
current and past earnings, these models
react more slowly to cyclical fluctuations.
Income elasticities of new-car sales
derived from permanent income models
have yielded estimates between 1.0 and
3.6.2 There is no evidence that autodemand models have been significantly
improved in terms of forecast accuracy
by the shift from current income levels to
a permanent income approach, nor do
the income-elasticity estimates appear to
be unusually different. Regardless of the
income approach used, estimates of
income elasticities suggest eroding
demand for new cars in the United States
over the last three years can be explained
in part as a cyclical response to slow
income growth during the recessions of
1980 and 1981-82.
There seems to be a definite correlation between income growth and the size
of an automobile purchased.' Simply,
consumers in the aggregate have
adjusted their new-car purchase decisions
for income weakness and job insecurity
by buying smaller, more fuel-efficient
cars. More importantly, this evidence also
suggests that slow income growth not
only reduces the total demand for cars by
consumers, but it also weakens new-car
1. Daniel B. Suits. "The Demand for New Automobiles in the United States 1929·1956." Review of
Economics and Statistics. vol, 40 (August 1958), pp,
273·80.
2. Alan C. Hess, "A Comparison of Automobile
Demand Equations." Econometrica, vol, 45. no. 3
(April 1977). pp. 683-701; and Asher Tishler. "The
Demand for Cars and the Price of Gasoline: The
User Cost Approach." Review of Economics and
Statistics, vol. 64, no. 2 (May 1982). pp, 184·90.
3. Tishler. "The Demand for Cars ....•. p. 188.

markets relative to used-car markets-an
indication that the substitutability of new
cars and used cars varies over the business cycle. A shift from new-car markets
to used-car markets tends to increase the
ase of the U.S. auto stock during periods
of recession and puts upward pressure
on the prices of used cars.

Chart 1 New-Car Price Comparisons
Thousands

a

of dollars

Costs and Demand
Sticker shock has become a popular
term to describe consumer reaction to
the prices of new cars. While the high
prices of new cars certainly have contributed to the decline in new-car demand in
recent years, the impact of new-car
prices probably has been overstated. The
relative price of new cars probably has
been falling over a long period of time and
particularly since 1978. In fact, the prices
of new domestic cars have risen less than
the rate of inflation as measured by the
consumer price index (CPI) during 14 of
the past 15 years. From a price perspective, it is necessary to hold the mix and
quality of the new-car market constant to
isolate the influence of price change.
Although this procedure (reflected in CPImeasured new-car prices) gives a more
precise measure of price change, it does
not accurately reflect the transactions, or
purchase, price of new cars. The transactions price of cars paid by consumers
may be much larger than CPI data indicate if significant changes in new-car quality and style occur over a measurement
period. Chart 1 shows the average price
of new cars paid by U.S. consumers and
the average price represented by changes
in the CPI for new cars. The differences
between these two price measures are an
indication of the new-car cost increases
associated with changes in style and
improvements in new-car quality, such as
fuel-efficiency and pollution-control
equipment. The average price of a new
car in 1982 was $9,750, or $2,381 greater
than a CPI-based new-car price. The 1982
price suggests that as much as 40 percent
of the increase in new-car prices since
1974 resulted from improvements to car
quality and changes in style.
Compared with nondurable goods, for
which consuming and buying are fundamentally the same, a car is a store of

oL-__ ~~
1974

1975

__ ~
1976

~
1977

-L

~

1978

1979

~

L-__~

1980

1981

1982

a. New-car prices include domestic and foreign models. The CPI average new-car price represents the
consumer new-car price index (1974 = lOO), multiplied by the average price of new cars in 1974.

transportation services. Viewed this way,
the cost of using these rendered services
is more important to potential consumers
than the car's purchase price. Economists have called such costs user costs,
where new-car prices are treated as an
expense over the expected life of a car
rather than an expense absorbed entirely
at the time of purchase. Because a car is
essentially a transportation asset, usercost methods adjust for resale value
when the asset eventually is sold in a
secondary market as a used car. Therefore, an increase in car prices does not
translate entirely 'into user costs, especially if a large share of the price increase
is quality-induced and either increases the
car's value in the resale market or allows
consumers to hold their cars for a greater
length of time. An increase in car prices
might slow the pace of new-car sales, but
only to the extent that the increase raises
user costs in terms of the depreciation
level or additional interest costs.
The user-cost approach includes measures of the market rate of interest to
represent the earnings opportunities
foregone when a person makes a cash
outlay for a car. Currently, about 75 percent of new-car purchases are financed,

which closely links the interest component of user costs to consumer lending
rates. New-car loan rates have risen to
average quarterly peaks of 14.8 percent
in 1980, 15.9 percent in 1981, and 15.8
percent in 1982. A high real rate of interest raises the user cost to consumers and
hence reduces new-car demand. As
interest rates increase, however, the user
cost of all durable goods rises. Other
durable goods compete for a share of
household wealth, and some studies have
argued that a shift from other durablegoods expenditures into new-car markets
occurs as interest rates rise.4 The net result of rising user costs on new-car demand
from both pnce and interest-rate sources
is negative hut small relative to the
sensitivity of income to new-car demand.
A related issue to the cost considerations of buying a new car is affordability. While a car might be desired at a
given income-stream and over-the-life
cost, the periodic monthly payments
might be too prohibitive for certain
household budgets to absorb. One way
consumers can reduce the affordability
constraint is to lengthen the borrowing
4. Hess. "A Comparison ...••.

p,

698.

Federal Reserve Bank of Cleveland
period over which auto loans are made,
thus minimizing short-term strains on
income and cash flow. Indeed, paralleling
an aging auto stock is a lengthening of
the maturity of average new-car loans
from roughly 36 months in 1974 to 46
months in 1982 (see table I). An aggregate increase in borrowing maturities for
new-car loans gives households partial
relief from rising interest rates and newcar prices, although total user costs
on average willincrease over the life
of the car.
Although not actually considered user
costs, the operating costs of automobiles,
particularly gasoline prices, have been
discussed at length in the auto-demand
literature over the past few years. For the
most part, the evidence supports what
economic theory would predict. Increases
in gasoline prices tend to reduce the
overall demand for cars, especially the
demand for larger, less fuel-efficient
models. Consequently, energy price increases have contributed to the number
of smaller, foreign autos currently mushrooming in the United States. The evidence
also suggests that the sensitivity of newcar demand to changes in gasoline costs
is greater than the impact of user costs
on new-car demand. And, as does weakness in disposable income, higher gasoline prices increase the demand for used
cars relative to new cars.5 In sum, Americans have adjusted to recessionary
income loss and gasoline price increases
with similar strategies: we have decreased
our total demand for new cars, while
increasing our purchases of imports and
the age of the existing auto stock.
Auto Sales in 1983

There are many ingredients necessary
to an auto sales recovery in 1983. The
long-term growth in new-car sales from
new ownership is probably already on the
wane. The increase in the number of
Americans aged 20 years to 40 years is
slowing, willpeak around 1991, and will
decline thereafter. 6 The rapid growth of
5. Tishler, "The Demand for Cars ... ," p. 188.
6. William A. Cox, "Changing Consumption Patterns," American Demographics, vol. 3, no. 5 (May
1981), p. 18.

individual households that occurred in the
1970s also should slow in the 1980s.
These factors can limit the growth of
additions to the U.S. auto stock in the
coming years and consequently reduce
the trend of new-owner auto sales. For
these reasons, the U.S. auto market for
new cars might never fully recover to the
sales levels it once enjoyed. The trend
component of the replacement demand
for new autos has been on the decline for
several years, and a sudden reversal in
this aging behavior does not appear likely.
However, the cyclical willingness of consumers to retain older cars should stabilize and eventually generate a faster auto
scrappage rate, as car stocks reach an
age where replacement can no longer be
deferred. According to one analysis, the
demand for new autos to replace aging
autos is already building; over the next
few years such replacement could add as
many as 1 million additional units annually
to new-car sales.7
A prerequisite for recovery in auto
sales is persistent real income growth
throughout the year. As labor markets
firm, the prospects for such income
strengthening are improving. Moreover,
strength in the 1983 new-car market
requires moderation in the pace of gasoline price advances. Although political
events in the Middle East and the decisions of OPEC are uncertain, the current
state of the oil markets suggests that
energy supplies would be abundant in
1983. In January 1983, the average retail
price per gallon of gasoline fell to $1.16,
nearly $0.14 below that of July 1982 and
its lowest level in three years. Many oilmarket analysts anticipate continuing
gasoline price retreats until summer.
In addition to the necessary conditions
of income strength and gasoline price restraints, another decline in relative prices
of new cars would contribute to a sustained auto recovery. For the 1983 model
year, General Motors announced an average price increase of only 1.9 percent
over similar 1982 models, while the prices
7. Susan Weller Burch, The Aging of the U.S. Auto
Stock: Implications for Demand, Working Paper 26
(Board of Governors of the Federal Reserve System, January 1983).

Table 2 Auto-Sales Forecasts: 1983
In millions of units; as of March 1983
9.3a

Chase Econometrics
Conference Board
Data Resources, Inc. .
Econoviews International Inc
Eggert Economic Enterprises
Evans Economics ...........•..........
Goldman, Sachs Co. .
UCLA Business Forecast
Univ. of Michigan M.Q.E.M
Wharton Econometric Forecast
43 forecast composite

9.3
9.0
10.5
10.0
B.8
9.2
9.1

9.0
9.6
;

9.3

a. February data.
SOURCES: Blue Chip Economic Indicators and
Automotive News. Data reprinted bypermission
~ of Eggert Economic Enterprises, Inc., Sedona,
Arizona 86336.

r

of Ford Motor Company products increased
less than 1 percent over the last model
year. More importantly, given the recognition of user-cost importance to newauto demand, the path of interest rates
enters into the prognosis for new-car
sales in 1983. Consumer lending rates have
been falling since autumn 1982, and a conFederal Reserve Bank of Cleveland
Research Department
P.O. Box 6387
Cleveland,OH 44101

tinuation of this trend certainly improves
prospects for auto sales in 1983.
In conclusion, the variables for an auto
recovery in 1983 are in place, and most
market analysts apparently agree (see
table 2). The least optimistic forecast calls
for total 1983 auto sales of 8.8 million
units, an Increase of 10 percent from the
1982 sales performance of 8.0 million
autos, but well below pre-1980 sales. On
the more optimistic side, some auto-sales
forecasts for 1983 are above the 10million unit level, which would represent
one of the stronger auto-sales comebacks
in many years. An average of 43 market
forecasts yields an expected 9.3-million
unit sales pace for the 1983 calendar
year, about a 16 percent improvement
over the unit-sales performance for 1982
and a decided gain from the dismal auto
markets of the past three years.
Predicting the future is a hazardous
business, particularly in today's auto
market. The strength of such forecasts
resides precariously in the ability of labor
markets to improve real consumer incomes during the year. Throwing this
caution aside, it would appear that auto
dealers should enjoy the 1983 sales year,
with even stronger sales to follow.
BULK RATE
U.S. Postage Paid
Cleveland, OH
Permit No. 385

Correction Requested: Please send corrected mailing label to the Federal
Reserve Bank of Cleveland, Research Department, P.O. Box 6387, Cleveland, OH 44101.

Address

March 7, 1983

~19nomic Commentary
Issues in the 1983 Auto-Sales Outlook
by Michael F. Bryan
Since the late 1970s, the U.S. auto
market has suffered a severe decline.
Total auto sales (domestic and foreign)
have fallen from the highs of over 11 million units in 1977 and 1978 to an anemic
average of 8.5 million units since 1980.
The sales performance of U.S. autos has
become one of the business horror
stories of the 1980s, as imports consistently have captured a greater share of
the shrinking new-car market. Accompanying the sales dive of U.S. autos is a
corresponding dip in the capacity utilization rate of U.S. motor vehicle industries;
this measure fell from 99 percent in 1977
to approximately 60 percent in 1982.
Total employment in these industries
declined nearly 27 percent over the same
period. With an industry so decimated, it
has been difficult for market analysts to
predict the level of auto sales in 1983.
After examining the sources of new-car
demand, we still question whether the
recent weakness in the auto industry is
temporary or whether it represents a
long-run downward adjustment that could
continue indefinitely.
Until recent years, auto sales were
influenced primarily by changes in the
population, the existing stock of autos,
real disposable income, and time. Since
the late 1970s, however, auto sales forecasts that relied on such traditionally
accurate indicators have been off the
mark. Inflation, the frequency of recessions, historically high interest rates, gasoline shortages and their accompanying
price increases, and changing household
demographics have collectively muddled
a market model that in previous years
was reasonably predictable. In 1982, for
example, total auto sales were 2.5 million
units less than estimated by many industry analysts.

An Aging Auto Stock

Changes in the pattern of consumer
auto buying have drastically altered the
profile of the U.S. auto market (see
table I). The small-car market share of
total domestic sales rose from 49.2 percent
in 1974 to 63.5 percent in 1982. Foreign
competitors seem to hold an advantage in
the production and marketing of these
smaller models, consequently increasing
their importance as a source of new
automobiles. In 1974, imports commanded 15.9 percent of the U.S. new-car
market, a share that has since risen to
almost 28 percent.
The demand for new cars results from
two general sources: (1) additions to the
stock of autos (new ownership) and (2)
replacement of the existing auto stock.
Additions to the auto stock result from
changes in taste, in real personal income,
and especially in demographic characteristics. An increase in the population of
driving age, such as the aging of the babyboom cohort, expands the rate of additions to the auto stock as more people
require transportation. Similarly, since
1970 single-person households have
become more prominent, further increasing the demand for cars. Moreover, the
number of wage earners per household
has risen, because large numbers of
women have entered the labor force as
both primary and secondary wage
earners. Such demographic changes have
greatly accelerated the rate of additions
to the auto stock.
The author is an economic analyst with the Federal
Reserve Bank of Cleveland.
The views stated herein are the author's and not
necessarily those of the Federal Reserve Bank of
Cleveland or of the Board of Governors of the
Federal Reserve System.

Federal Reserve Bank of Cleveland
period over which auto loans are made,
thus minimizing short-term strains on
income and cash flow. Indeed, paralleling
an aging auto stock is a lengthening of
the maturity of average new-car loans
from roughly 36 months in 1974 to 46
months in 1982 (see table I). An aggregate increase in borrowing maturities for
new-car loans gives households partial
relief from rising interest rates and newcar prices, although total user costs
on average willincrease over the life
of the car.
Although not actually considered user
costs, the operating costs of automobiles,
particularly gasoline prices, have been
discussed at length in the auto-demand
literature over the past few years. For the
most part, the evidence supports what
economic theory would predict. Increases
in gasoline prices tend to reduce the
overall demand for cars, especially the
demand for larger, less fuel-efficient
models. Consequently, energy price increases have contributed to the number
of smaller, foreign autos currently mushrooming in the United States. The evidence
also suggests that the sensitivity of newcar demand to changes in gasoline costs
is greater than the impact of user costs
on new-car demand. And, as does weakness in disposable income, higher gasoline prices increase the demand for used
cars relative to new cars.5 In sum, Americans have adjusted to recessionary
income loss and gasoline price increases
with similar strategies: we have decreased
our total demand for new cars, while
increasing our purchases of imports and
the age of the existing auto stock.
Auto Sales in 1983

There are many ingredients necessary
to an auto sales recovery in 1983. The
long-term growth in new-car sales from
new ownership is probably already on the
wane. The increase in the number of
Americans aged 20 years to 40 years is
slowing, willpeak around 1991, and will
decline thereafter. 6 The rapid growth of
5. Tishler, "The Demand for Cars ... ," p. 188.
6. William A. Cox, "Changing Consumption Patterns," American Demographics, vol. 3, no. 5 (May
1981), p. 18.

individual households that occurred in the
1970s also should slow in the 1980s.
These factors can limit the growth of
additions to the U.S. auto stock in the
coming years and consequently reduce
the trend of new-owner auto sales. For
these reasons, the U.S. auto market for
new cars might never fully recover to the
sales levels it once enjoyed. The trend
component of the replacement demand
for new autos has been on the decline for
several years, and a sudden reversal in
this aging behavior does not appear likely.
However, the cyclical willingness of consumers to retain older cars should stabilize and eventually generate a faster auto
scrappage rate, as car stocks reach an
age where replacement can no longer be
deferred. According to one analysis, the
demand for new autos to replace aging
autos is already building; over the next
few years such replacement could add as
many as 1 million additional units annually
to new-car sales.7
A prerequisite for recovery in auto
sales is persistent real income growth
throughout the year. As labor markets
firm, the prospects for such income
strengthening are improving. Moreover,
strength in the 1983 new-car market
requires moderation in the pace of gasoline price advances. Although political
events in the Middle East and the decisions of OPEC are uncertain, the current
state of the oil markets suggests that
energy supplies would be abundant in
1983. In January 1983, the average retail
price per gallon of gasoline fell to $1.16,
nearly $0.14 below that of July 1982 and
its lowest level in three years. Many oilmarket analysts anticipate continuing
gasoline price retreats until summer.
In addition to the necessary conditions
of income strength and gasoline price restraints, another decline in relative prices
of new cars would contribute to a sustained auto recovery. For the 1983 model
year, General Motors announced an average price increase of only 1.9 percent
over similar 1982 models, while the prices
7. Susan Weller Burch, The Aging of the U.S. Auto
Stock: Implications for Demand, Working Paper 26
(Board of Governors of the Federal Reserve System, January 1983).

Table 2 Auto-Sales Forecasts: 1983
In millions of units; as of March 1983
9.3a

Chase Econometrics
Conference Board
Data Resources, Inc. .
Econoviews International Inc
Eggert Economic Enterprises
Evans Economics ...........•..........
Goldman, Sachs Co. .
UCLA Business Forecast
Univ. of Michigan M.Q.E.M
Wharton Econometric Forecast
43 forecast composite

9.3
9.0
10.5
10.0
B.8
9.2
9.1

9.0
9.6
;

9.3

a. February data.
SOURCES: Blue Chip Economic Indicators and
Automotive News. Data reprinted bypermission
~ of Eggert Economic Enterprises, Inc., Sedona,
Arizona 86336.

r

of Ford Motor Company products increased
less than 1 percent over the last model
year. More importantly, given the recognition of user-cost importance to newauto demand, the path of interest rates
enters into the prognosis for new-car
sales in 1983. Consumer lending rates have
been falling since autumn 1982, and a conFederal Reserve Bank of Cleveland
Research Department
P.O. Box 6387
Cleveland,OH 44101

tinuation of this trend certainly improves
prospects for auto sales in 1983.
In conclusion, the variables for an auto
recovery in 1983 are in place, and most
market analysts apparently agree (see
table 2). The least optimistic forecast calls
for total 1983 auto sales of 8.8 million
units, an Increase of 10 percent from the
1982 sales performance of 8.0 million
autos, but well below pre-1980 sales. On
the more optimistic side, some auto-sales
forecasts for 1983 are above the 10million unit level, which would represent
one of the stronger auto-sales comebacks
in many years. An average of 43 market
forecasts yields an expected 9.3-million
unit sales pace for the 1983 calendar
year, about a 16 percent improvement
over the unit-sales performance for 1982
and a decided gain from the dismal auto
markets of the past three years.
Predicting the future is a hazardous
business, particularly in today's auto
market. The strength of such forecasts
resides precariously in the ability of labor
markets to improve real consumer incomes during the year. Throwing this
caution aside, it would appear that auto
dealers should enjoy the 1983 sales year,
with even stronger sales to follow.
BULK RATE
U.S. Postage Paid
Cleveland, OH
Permit No. 385

Correction Requested: Please send corrected mailing label to the Federal
Reserve Bank of Cleveland, Research Department, P.O. Box 6387, Cleveland, OH 44101.

Address

March 7, 1983

~19nomic Commentary
Issues in the 1983 Auto-Sales Outlook
by Michael F. Bryan
Since the late 1970s, the U.S. auto
market has suffered a severe decline.
Total auto sales (domestic and foreign)
have fallen from the highs of over 11 million units in 1977 and 1978 to an anemic
average of 8.5 million units since 1980.
The sales performance of U.S. autos has
become one of the business horror
stories of the 1980s, as imports consistently have captured a greater share of
the shrinking new-car market. Accompanying the sales dive of U.S. autos is a
corresponding dip in the capacity utilization rate of U.S. motor vehicle industries;
this measure fell from 99 percent in 1977
to approximately 60 percent in 1982.
Total employment in these industries
declined nearly 27 percent over the same
period. With an industry so decimated, it
has been difficult for market analysts to
predict the level of auto sales in 1983.
After examining the sources of new-car
demand, we still question whether the
recent weakness in the auto industry is
temporary or whether it represents a
long-run downward adjustment that could
continue indefinitely.
Until recent years, auto sales were
influenced primarily by changes in the
population, the existing stock of autos,
real disposable income, and time. Since
the late 1970s, however, auto sales forecasts that relied on such traditionally
accurate indicators have been off the
mark. Inflation, the frequency of recessions, historically high interest rates, gasoline shortages and their accompanying
price increases, and changing household
demographics have collectively muddled
a market model that in previous years
was reasonably predictable. In 1982, for
example, total auto sales were 2.5 million
units less than estimated by many industry analysts.

An Aging Auto Stock

Changes in the pattern of consumer
auto buying have drastically altered the
profile of the U.S. auto market (see
table I). The small-car market share of
total domestic sales rose from 49.2 percent
in 1974 to 63.5 percent in 1982. Foreign
competitors seem to hold an advantage in
the production and marketing of these
smaller models, consequently increasing
their importance as a source of new
automobiles. In 1974, imports commanded 15.9 percent of the U.S. new-car
market, a share that has since risen to
almost 28 percent.
The demand for new cars results from
two general sources: (1) additions to the
stock of autos (new ownership) and (2)
replacement of the existing auto stock.
Additions to the auto stock result from
changes in taste, in real personal income,
and especially in demographic characteristics. An increase in the population of
driving age, such as the aging of the babyboom cohort, expands the rate of additions to the auto stock as more people
require transportation. Similarly, since
1970 single-person households have
become more prominent, further increasing the demand for cars. Moreover, the
number of wage earners per household
has risen, because large numbers of
women have entered the labor force as
both primary and secondary wage
earners. Such demographic changes have
greatly accelerated the rate of additions
to the auto stock.
The author is an economic analyst with the Federal
Reserve Bank of Cleveland.
The views stated herein are the author's and not
necessarily those of the Federal Reserve Bank of
Cleveland or of the Board of Governors of the
Federal Reserve System.