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Data & Testing
2008 Fuel Economy
Information Now Available
The test data used to determine the fuel economy estimates posted on the fuel economy labels and to calculate a manufacturer's corporate average fuel economy (CAFE) is derived from vehicle testing done at EPA's National Vehicle and Fuel Emissions Laboratory in Ann Arbor, Michigan, and by vehicle manufacturers who submit their own test data to EPA. Each year, EPA provides fuel economy data to the Department of Energy (DOE), the Department of Transportation (DOT) and the Internal Revenue Service (IRS) so that they can administer their fuel economy-related programs. DOE publishes the annual fuel economy label values in the annual Fuel Economy Guide and on the fuel economy web site at http://www.fueleconomy.gov. DOT receives the manufacturers' fleet average fuel economy from EPA, and determines if manufacturers are complying with the CAFE standards. EPA provides IRS with the fuel economy data for vehicles which may be subject to the Gas Guzzler tax penalty. IRS is responsible for collecting those taxes from manufacturers.
The following fuel economy reports and data are available online:
Fuel Economy Guide Data: These files includes the fuel economy label values for each model type. Downloadable, delimited text files for import into databases or spreadsheets -- by model year
Fuel Economy Guide
Download the latest Fuel Economy Guide
Copies of Fuel Economy Guide booklets are available from:
NREL Fuel Economy Guide Request
1617 Cole Blvd, MS1633
Golden, CO 80401
1-800-423-1363Fuel Economy Test Car List Reports: These files include the original test data used to determine the label values. This link covers the data from model years 1978-1997. Downloadable, detailed descriptions of vehicle fuel economy tests -- by model year
Fuel Economy Test Car List Data: These files include the original test data used to determine the label values. This link covers the from model years 1986 to present. Downloadable, delimited vehicle description data for import into databases/spreadsheets -- by model year
Publications and Related Links
- Light-Duty Automotive Technology and Fuel Economy Trends Report: These reports show how average fuel economy in the U.S. has changed over time.
- 2007 Progress Report: Vehicle and Engine Compliance Activities (PDF) (64 pp, 890K, EPA420-R-08-011, October 2008, About PDF)