Source: BTS. Motor vehicles, fuel consumption and travel data
include light duty vehicles, buses, trucks and motorcycles.
Total Motor Vehicle Fuel Consumption and Travel in the United States,
The Oil Shocks of the 1970s and early 1980s were accompanied by an
increase in the fuel efficiency of motor vehicles. While in 1970, a
motor vehicle was consuming on average 800 gallons a year (about 12.5
miles per gallon), in 2014 this figure dropped to 660 gallons a year
(about 22 miles a gallon). The system-wide improvement in energy efficiency
was consequently around 40%. However, the 1990s saw an increase in the
average amount of fuel consumed per vehicle as commuting distances and
congestion increased, especially in urban areas.