Light-Duty Vehicle and Engine Emission Certification
A comprehensive information source for light-duty vehicle and engine emission certification programs
Compliance and Certification:
- Manufacturer Guidance Letters (1979-present)
- Alternative Fuel Conversions (PDF) (150K)
- OBD II Systems on Aftermarket Alternative Fuel Conversions (PDF) (101K)
- Contact List for Fuel Converters (PDF) (1 pg, 21K)
- New Vehicle Certification Standards (EPA420-B-00-001, February 2000)
- Compliance Fees
- Engine Certification (Nonroad & Heavy-Duty Highway)
- Test Procedures
Data:
- CFEIS - Certification & Fuel Economy Information System
- In-Use Vehicle Emission Testing & Recall (Including 1991-1999 Annual Recall Reports)
- Light-Duty Annual Certification Test Result Reports & Data
- Fuel Economy Guide and Test Results
Publications:
- What You Should Know about Using, Installing, or Buying Aftermarket Catalytic Converters (PDF)
- EPA tests and certifies fuel cell vehicle:
- Press Release (February 11, 2003)
- EPA Fuel Cell Testing Facts (PDF) (15K, EPA420-F-02-055, January 2003) Fact Sheet on NVFEL's testing of fuel cell vehicles.
- Gas Saving and Emission Reduction Devices Evaluation
- 2007 Progress Report: Vehicle and Engine Compliance Activities (PDF) (64 pp, 890K, EPA420-R-08-011, October 2008)
Related Links:
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.