 I bought my Audi about 9 month ago.  It is an ok car overall but very poor quality.  So far, I've replaced radiator, check engine light went on twice, and constantly have to add more oil to the car because "Low Oil" light goes on.  These are just major problems.  It is still fun to drive (when it is not in the shop) but it doesn't perform as new anymore.   Another thing to mention is fuel economy.  I though it would be an economical car.  The gas mileage is great on the highway ( about 29 mpg) and is horrible in the city and stop and go traffic, where I get about 15 mpg!!  Considering that you have to buy premium gas, there's no savings.  Also, the car is very loud and noisy.