2008 AUDI RS6

This is not a standard C6 RS6. Under the bonnet sits Audis outrageous 5.0-litre twin-turbo V10, now producing approximately 780BHP, with replacement turbos already fitted. At 97,655 miles and with unusually low ownership for its age, this is the sort of RS6 that makes considerably more sense once you understand what has already been invested into it. These cars are legendary for their performance, but knowledgeable buyers also know that maintenance and provenance matter far more than simply finding the cheapest example. This one has already had significant expenditure where it matters.