I'm looking at a 2007 s6 with 86000 miles. They are asking 25900. What's the going price for these. I know kbb is like 28000 but they are always high. I just don't want to pay to much for it.

Also what's known to go wrong with these cars? What should I look for. Is 86000 miles a lot of miles on it. It looks clean. Never seen one in person and the motor rattles a little like valve/injector rattle. Is that commen.

Just trying to get some help before I buy. Any would help.