A mate ran a C5 S6 for a couple of years, he bought it with just under 80k miles on the clock. He came slightly late to the realisation that it would have been way more fiscally responsible to have set fire to the £12k he paid for it.
Made a lovely noise when it was running though.
I looked up audi all roads, just because.
4.2 v8 for 5500 euro, 160km.
Look what I just found on Wallapop!
Audi A6 Allroad 2004 V8 4.2 typtronic
http://p.wallapop.com/i/538474180?_pid=wi&_uid=12139269&_me=s_android