An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Vehicle and Engine Certification

Engines and Vehicles Compliance Information System (EV-CIS) Documentation for Cross-Industry Services

Use the following files for all EV-CIS cross-industry modules.  This currently includes the Update Introduction to Commerce Date module.

Free Viewers