Vehicle and Engine Certification

Website Changes for Certification and Compliance for Vehicles and Engines

Why is EPA transforming our websites?

EPA is transforming our websites to better meet the needs of our web visitors. 

The new sites will:
  • Provide easier access to information about the work we are doing;
  • Improve EPA’s transparency and openness to our audiences;
  • Provide a consolidated resource for priority topics; and
  • Create more relevant content for specific audiences.

Will the website address change?

Yes, the new website address will change based on the new name. Bookmarks linked to the old website address will be redirected to the homepage of the new site. 

If I need help with the new website, who should I contact? 

For help with the new website, please email EPA's Office of Transportation and Air Quality Public Information Line: