|Average U.S. passenger car fuel efficiency (kmpl) (calendar year)|
|Other 2-axle 4-tire vehicle||5.2||6.1||6.8||7.2||7.4||7.4||7.4||7.4||7.3||7.3||7.3||7.2||R7.4||7.5|
|New vehicle fuel efficiency (kmpl)b (model year)|
|Light truck (<8,500 lbs GVWR)c||7.9||8.8||8.8||9.1||8.8||8.9||8.8||8.7||8.8||8.8||9.0||8.9||R9.1||8.9|
|CAFE standards (kmpl)b (model year)|
|Light truck||d6.8 / 6.0||8.3||8.5||8.6||8.6||8.7||8.7||8.8||8.8||8.8||8.8||8.8||8.8||8.8|
KEY: CAFE = Corporate Average Fuel Economy; GVWR = gross vehicle weight rating; kmpl = kilometers per liter; 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. These data were then converted to metric units.
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.
1.609344 kilometers = 1 mile.
3.785412 liters = 1 gallon.
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.