Econometric Models of the Demand for Motor Fuel
ResearchPublished 1975
ResearchPublished 1975
Reviews recent studies of the response of motor fuel demand to price changes, develops two methodologies for estimating short-run and long-run demand relationships, presents empirical estimates made with both national time-series and state pooled time-series data, and compares these estimates with those of other recent studies. This report concludes that the first-year elasticity of highway motor fuel use with respect to real price is low — probably between -0.1 and -0.3; however, the long-run elasticity is higher — between -0.60 and -0.85. Higher gasoline prices would cause new-car sales to drop temporarily, but improved new-car fuel efficiency could stimulate sales and offset some of the decline. A 10 percent increase in real gasoline price would cause a 2 to 3 percent decline in long-run automobile ownership. A given percentage increase in fuel efficiency would not cause a commensurate decrease in fuel use. (See also R-1560, R-1562.)
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