Cars and Light Trucks
Inspection & Maintenance (I/M) - Tampering and Warranty
This page provides information on warranty coverage and a memorandum for exemption from tampering for enforcement purposes under the U.S. EPA's vehicle inspection and maintenance program.
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.
- The memo which must be completed in order for state agencies to legally tamper with certified vehicle configurations so that cars can be used in covert audits of I/M programs (PDF) (11K, EPA420-B-99-010, December 1999)
- Fact Sheet: Emission warranties for 1995 and newer cars and trucks (PDF) (10 pp, 145K, EPA420-F-09-048, October 2009)
- Fact Sheet: If Your Car Just Failed An Emissions Test... You May Be Entitled To Free Repairs (PDF) (24K, EPA420-F-95-014, December 1995)
- A list of parts that are considered "emission related" for purposes of warranty emission repairs (PDF) (14K, EPA420-B-91-001, July 1991)