Usually the emission system components aren't covered on an extended warranty. That's why there was a longer warranty on them right out the gate. You need to read the fine print on that! Seems a bit steep for only 3 years coverage!

A lot of the "after market" warranties are very specific on where you can take your vehicle for the repairs. Some will even have you pay for the tear down to see what is wrong, then say it's not covered! AHS did that to a friend on his F350! Had a rod knock, paid for tear down, AHS was available while tear down happened, got stuck with bill for tear down and replacement!

Just read the fine print and if they want to rush you, WALK away as fast as you can! JM2C.