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Cars and Light Trucks

Light Duty Greenhouse Gas Standards Compliance Information

The U.S. Environmental Protection Agency and the National Highway Transportation Safety Administration issued national light-duty greenhouse gas and fuel economy standards on April 1, 2010. The greenhouse gas standards apply to cars and light trucks, beginning with the 2012 model year. Manufacturers must meet standards for tailpipe methane and nitrous oxide emissions, plus increasingly stringent fleet average standards for carbon dioxide in each model year through 2016. The regulations provide flexibility to meet the standards by enabling manufacturers to generate emission credits which they may save for future years or sell to other manufacturers.

NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some 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.

This page provides compliance information for manufacturers producing vehicles and engines subject to greenhouse gas standards.


Flex Fuel Vehicle Greenhouse Gas Emission Guidance for Auto Manufacturers

This guidance document provides the weighting factor that auto manufacturers may use in calculating flex fuel vehicle emission credits under the light-duty greenhouse gas program for model year 2016-2018 vehicles.

Guidance Letter: E85 Flexible Fuel Vehicle Weighting Factor for Model Year 2016-2018 Vehicles (PDF) (27 pp, 429K, November 2014)


Question and Answer Documents

Reporting Templates

Certification and Compliance Data Submission Procedures

Manufacturers must submit greenhouse gas certification and reporting data through Verify, EPA’s engine and vehicle compliance information system. Verify registration and system information.

Reports and Data

Requests for Off-Cycle Credits

Related Actions

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