Originally Posted by TonyR20
I'm getting close to my warranty expiration and have read a lot about the carbon buildup issues. Does anyone have experience with that and is it something I should have checked prior to warranty expiration?
Audi won't do anything for you unless you throw a CEL for CB. However, assuming you have the NA 4.2, you should be covered for 10 years and 120k miles.
We are, on both our NA 3.2 Q5 and 3.0 SC S5. (letters issued by AOA)
A call to AOA can confirm this for your engine and peace of mind.