An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Light-Duty Vehicle CO2 and Fuel Economy Trends

Download the CO2 and Fuel Economy Trends Report, 1975-2016

This is the previous year's report. Download the current report.

1975-2016 Executive Summary

Stand-alone document summarizing the key highlights from the full Trends Report.

1975-2016 Full Report

The Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends Report is published annually to summarize trends in EPA’s best estimate of real-world tailpipe carbon dioxide (CO2) emissions and fuel economy, and associated technologies.

1975-2016 Report Tables

1975-2016 Appendices to the Report

Download the Full Trends Report and Executive Summary