Impacts of Long-Range Increases in the Fuel Economy (CAFE) Standard

This work models the impact of higher CAFE standards on producer and consumer welfare, gasoline consumption, externalities from increased driving, and the emissions of traditional pollutants. In particular, a long-run 3.0 MPG increase in the CAFE standard is estimated to impose welfare losses of about $4 billion per year and save about 5.2 billion gallons of gasoline per year, for a hidden tax of $0.78 per gallon conserved. An 11-cent-per-gallon increase in the gasoline tax would save the same amount of fuel at a welfare cost of about $290 million per year, or about one-fourteenth the cost. (JEL L51, Q30)