I am in the process of purchasing a one owner 2013 Audi A8 4.0T with 81K miles. Its got impeccable service record from an Audi Dealer, Just traded in, Looks clean and drives well. I am taking it to a different Audi Dealer for a comprehensive inspection of the turbos and other components to make sure all is good before signing on the dotted line. Has anyone else owned one of these who have taken care of it as this one has and NOT had a turbo or pcv system problem. you always hear about the horror stories but never the good ones. Are there any other issues that needs to be looked at? I am also looking into an extended warranty program which will cover these items so if and when they occur I won't be shelling out tons of cash while still making a car payment. Any advice would be greatly appreciated.