Fuel economy improvements are projected to reduce future gasoline use

Anticipated changes in energy consumption by light-duty vehicles in the United States are based on two factors: the amount of travel and the fuel economy of the vehicles used. The Annual Energy Outlook 2017 (AEO2017) Reference case projects a decline in light-duty vehicle energy use between 2018 and 2040 as improvements in fuel economy more than offset increases in light-duty vehicle miles.