This paper examines the effects of the Corporate Average Fuel Economy
Standards (CAFE) on automobile sales, prices, and fuel consumption. Fi
rst a discrete choice model of automobile demand and a continuous mode
l of vehicle utilization are estimated using micro data from the Consu
mer Expenditure Survey for 1984-1990. Next, the demand side model is c
ombined with a model of oligopoly and product differentiation on the s
upply side. With these elements in place, the effects of the CAFE regu
lation are assessed through simulations, and compared to the effects o
f alternative policy instruments, such as an increase in gasoline tax.