|Average U.S. passenger car fuel efficiency (mpg) (calendar year)|
|Other 2-axle 4-tire vehicle||12.2||14.3||16.1||17.0||17.3||17.4||17.3||17.3||17.2||17.2||17.2||17.0||R17.4||17.6|
|New vehicle fuel efficiency (mpg)b (model year)|
|Light truck (<8,500 lbs GVWR)c||18.5||20.7||20.8||21.3||20.8||21.0||20.8||20.5||20.8||20.6||21.1||20.9||R21.3||20.9|
|CAFE standards (mpg)b (model year)|
KEY: CAFE = Corporate Average Fuel Economy; GVWR = gross vehicle weight rating; mpg = miles per gallon; N = data do not exist; R = revised; U = data are not available.
a From 1980 to 1994, passenger car fuel efficiency includes motorcycles.
b Assumes 55% city and 45% highway-miles. The source calculated average miles per gallon for light-duty vehicles by taking the reciprocal of the sales-weighted average of gallons per mile. This is called the harmonic average.
c Beginning with FY 1999, the total light truck fleet ceased to be categorized by either domestic or import fleets.
d 2 Wheel Drive/4 Wheel Drive. No combined figure available for this year.
The fuel efficiency figures for light duty vehicles represent the sales-weighted harmonic average of the combined passenger car and light truck fuel economies.
Average U.S. passenger car fuel efficiency:
1980-94: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: July 1997), table VM-201A (Revised data obtained from Internet site http://www.fhwa.dot.gov/ohim/ohimstat.htm as of Aug. 2, 2001).
1995-2001: Ibid., Highway Statistics (Washington, DC: Annual issues), table VM-1.
New vehicle fuel efficiency (based on model year production):
1980-2001: U.S. Department of Transportation, National Highway Traffic Safety Administration, Automotive Fuel Economy Program, Annual Update Calendar Year 2001, table II-6, Internet site www.nhtsa.dot.gov/cars/problems/studies/fuelecon/index.html as of January 2003.
1980-2001: U.S. Department of Transportation, National Highway Traffic Safety Administration, Automotive Fuel Economy Program, Annual Update Calendar Year 2001, table I-1, Internet site www.nhtsa.dot.gov/cars/problems/studies/fuelecon/index.html as of January 2003.