Originally Posted by odoboyusa

I'd like to add one simple but important criteria to the list: if your car has a crammed engine bay (like a v8 or v10) the labor needed for the same operations is significantly more. For example replacing a starter on a 3.2 C6 is about two pages in Bentley where on the 4.2 C6 it's about 10 pages and it's a lot more involved. Labor is expensive, especially at the dealer so it's worth considering.