I own a 2001 A6, 4.2 and I am in love with it. I have never had any problems and I love it more and more every day! Once you test drive it, you will not want to get out of it! When it comes to maintenance, they are expensive because every luxury vehicle is expensive to maintain. If you can afford to buy one, you should afford to maintain it but it's well worth it. I use synthetic oil in mine just because I have used it in all of my vehicles. They are extremely comfortable to drive and the performance blows away the competition. If you have been looking at VW's and now your looking at Audi's, why look back?

All I can say is go for it and you will love it!!