I have a colleague who is looking at a local dealer's 1997 A6, ~45k miles, asking price is in the high-teens. I've given him general Audi/quattro advice, but as far as particulars with this particular model and year I'm not fully informed. Can any listers provide some useful information on a 97 A6 potential purchase that I might pass on? TIA, Mark 91 200q20v 85k