|Number registered (thousands)||14,211||20,418||27,876||37,214||48,275||65,738||69,134||70,224||71,330||75,356||79,085|
|Vehicle-miles traveled (millions)||123,000||201,000||291,000||391,000||575,000||790,000||817,000||850,000||868,275||901,022||924,018|
|Fuel consumed (million gallons)||12,313||19,081||23,796||27,363||35,611||45,605||47,354||49,370||50,462||52,859||52,382|
|Average miles traveled per vehicle (thousands)||8.7||9.8||10.4||10.5||11.9||12.0||11.8||12.1||12.2||12.0||11.7|
|Average miles traveled per gallon||10.0||10.5||12.2||14.3||16.1||17.3||17.2||17.2||17.2||17.0||17.5|
|Average fuel consumed per vehicle (gallons)||866||934||854||735||738||694||685||703||707||701||668|
KEY: R = revised.
Nearly all vehicles in this category are light trucks, which include vans, pickup trucks, and sport utility vehicles. In 1995, the U.S. Department of Transportation, Federal Highway Administration revised its vehicle categories beginning with 1993 data. They are passenger car, other 2-axle 4-tire vehicle, single-unit 2-axle 6-tire or more truck, and combination truck. Prior to 1993, some minivans and sport utility vehicles were included under the passenger car category.
1970-94: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: July 1997), table VM-201A.
1995-2001: Ibid., Highway Statistics (Washington, DC: Annual issues), table VM-1.