I am thinking about purchasing an Audi A6 3.0 quattro Avant. Any ideas about good/bad years, quality of the A6 v A4. A friend has had all sorts of problems with his 1.8 A4 sedan.
The price seams right but is this related to # of problems.
I am a long time VW owner and would like to grow up a little.

Anything newer than 2000 is a great choice I don't see many problems other than the CV boots getting worn out or the frontend suspension componets wearing out. the timing belts are an issue if they are not changed at around 60K