The most super of the super sedans.
It might be true that the Audi RS6 is not the super sedan produced by a German luxury brand. In fact, the BMW M5 and the Mercedes-Benz E63 AMG are very similar vehicles. But Audi has always taken it just a little bit further, and never was this more true than with the C6 (2008-2010) model. With its twin-turbo V10 producing 571 horsepower, it's Audi’s most powerful road model ever, and the Avant version is the most powerful production wagon of all time.