[Sammy]

The RS6 with the V10TT was a no go in the U.S. it didn't pass California emissions on cold start. With some of the largest markets for a car like that using California standards Audi AG. put the brakes on the car in the U.S. As I understand it they tinkered with a watered down 510 BHP version but still left it out of the U.S. model line.

 

[Sammy]

Watch over the next few years, you will see Audi bring more in. 2012 is going to be a very big year for the brand here in the states.