 Like many others have said, expensive car to buy, will go anywhere in the snow, lots of power with the twin turbos, but after about 60,000 miles lots of leaks and sensor problems.  Spent about equal time driving and being in the service station.   Vacuum leaks,  cam shaft seal leaks, valve cover leaks, axle leaks.  Just about every week, something new comes up to fix and the repair bills were about $4,000 per year.  Figured I better get rid of it before the turbos, engine, or transmission need replacing because those thing would cost me more than the car was valued at.  I did keep the car for about 16 years, but if I had to do it over again I wouldn't by an Audi (way overpriced), or if I did, I would sell it at about 60,000 miles.  They do not hold their value well.On a positive note, one of the best things about the Audi was after 16 years, there was no rust anywhere on the vehicle.  Audi did an excellent job with metal finishing and plastic protecting guards underneath the vehicle to limit corrosion on these New England salted roads.    In closing, my personal experience with the A6  is that it just keeps eating away at my wallet, my green alligator.   Never another Audi for me.