The Federal Emissions Warranty can cover emissions related components for vehicles up to 8 years after the in service date or up to 80,000 miles, whichever comes first. Even though a check engine light comes on or the vehicle doesn’t pass a smog check, it doesn’t necessarily mean that a part is covered under the Federal Emissions warranty.

There are two basic types of coverage, the performance warranty and the design and defect warranty.

Federal Emissions Performance Warranty

The Federal Emissions Performance Warranty covers the vehicle if it fails an emissions test in the first 2 years or 24,000 miles. Under these conditions most vehicles are already covered under the factory new vehicle warranty, so the 2 year 24,000 mile warranty is somewhat irrelevant. However many emissions components that can cause a vehicle to fail smog test, are covered up to 8 years or 80,000 miles, whichever occurs first.