Some emissions-related components (like the catalytic converter) are warranted for 8 yrs/80K miles. Many other emissions-related components are only governed by the federal requirement of 2 yrs/24K miles (though Chrysler extends its warranty on all such parts to the 3 yr/36K bumper to bumper warranty.) However, if your vehicle fails a federally approved state emission test, the vehicle is repaired under the 80K warranty regardless of which emissions components are repaired. But if an emissions-related part (e.g. an oxygen sensor) goes bad after 36K but less than 80K, it would not be covered unless you've failed an emissions test. So if you live in a locale without emissions testing or won't have your next emissions test before 8 yrs or 80K miles are on the clock, you would be responsible for the repair costs. California has its own set of specific emissions warranty requirements.