Cars and Light Trucks
Light-Duty Vehicle and Engine Emission Certification
Search for Documents
Search the Document Index System (DIS) database to find:
- Advisory Circulars
- Applications for Certification
- Certificates of Conformity
- Certificate Summary Information Reports
- Manufacturer Guidance Letters
- Verify System Documentation
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.
A comprehensive information source for light-duty vehicle and engine emission certification programs
Compliance and Certification:
- Manufacturer Guidance Letters
- Alternative Fuel Conversions
- Vehicle Certification Standards
- Fees
- Engine Certification (Nonroad and Heavy-Duty Highway)
- Test Procedures
- Light Duty Greenhouse Gas Standards and Compliance Information
Data:
- Verify - Certification & Fuel Economy Information System
- In-Use Vehicle Emission Testing & Quarterly and Annual Recall Reports
- Light-Duty Annual Certification Test Result Reports & Data
- Fuel Economy Guide and Test Results
- Test Car List Data
Publications:
- Gas Saving and Aftermarket Retrofit Device Evaluation Program (511 Program)
- What You Should Know about Using, Installing, or Buying Aftermarket Catalytic Converters (PDF) (7 pp, 20K, September 2000)
- 2009 - 2011 Compliance Report: Vehicle and Engine Compliance Activities (PDF) (74 pp, 11MB, EPA-420-R-13-006, December 2013)
- 2008 Progress Report: Vehicle and Engine Compliance Activities (PDF) (49 pp, 3.9MB, EPA-420-R-10-022, August 2010)
- 2007 Progress Report: Vehicle and Engine Compliance Activities (PDF) (64 pp, 890K, EPA420-R-08-011, October 2008)
