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Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends: 1975 Through 2013

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

EPA’s annual report shows model year (MY) 2012 is an all time record high for car and truck average fuel economy!

NOTE: These values represent real world fuel economy and emissions. They are not comparable to automaker standards compliance levels

  • MY 2012 fuel economy averaged 23.6 mpg, 1.2 mpg higher than MY 2011
  • MY 2012 CO2 average emissions were 376 grams per mile, down 22 g/mile from MY 2011
  • Preliminary MY 2013 data projects a further 0.4 mpg increase in fuel economy and 6 g/mile decrease in CO2 emissions

NOTE: You will need Adobe Acrobat Reader, available as a free download, to view most of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

Executive Summary

Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends: 1975 Through 2013 -- Executive Summary (PDF) (10 pp, 2.0MB, EPA-420-S-13-002, December 2013)

Full 2013 Report

Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends: 1975 Through 2013 (PDF) (135 pp, 7MB, EPA-420-R-13-001, December 2013) Full Report Tables (Excel) (142K, December 2013)

Appendices to the Report

List of Appendices (PDF) (1 pg, 70K, EPA-420-R-13-011-list-appx, December 2013)

APPENDIX A: Vehicles with Lowest and Highest Unadjusted, Laboratory Fuel Economy by Model Year (Excel) (38K)

APPENDIX B: Production-Weighted Percent Distribution of Adjusted Fuel Economy (MPG) (Excel) (27K)

APPENDIX C: Percent of 1975 to 2013 Production by Fuel Economy Band (Excel) (98K)

APPENDIX D: Fuel Economy Data Stratified by Vehicle Type (Excel) (112K)

APPENDIX E: Fuel Economy Data Stratified by Vehicle Type and Weight Class (Excel) (472K)

APPENDIX F: Fuel Economy Data Stratified by Vehicle Type and Drive Type (Excel) (163K)

APPENDIX G: Fuel Economy Data Stratified by Vehicle Type and Transmission (Excel) (457K)

APPENDIX H: Fuel Economy Data Stratified by Vehicle Type and Cylinder Count (Excel) (245K)

APPENDIX I: Fuel Economy Data Stratified by Vehicle Type, Engine Type and Valves Per Cylinder (Excel) (154K)

APPENDIX J: Unadjusted, Laboratory Fuel Economy (MPG) by Manufacturer, Vehicle Type and Inertia Weight (Excel) (481K)

APPENDIX K: Fuel Economy Data Stratified by Manufacturer and Vehicle Type (Excel) (959K)

For More Information

Please contact Jeff Alson at 734-214-4296, alson.jeff@epa.gov, or:

Office of Transportation and Air Quality
U.S. Environmental Protection Agency
2000 Traverwood Dr.
Ann Arbor, MI 48105

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