I turned my '95 Z into a track car and I now have a '07 A6 4.2 350 hp that is a good daily driver. The AWD is outstanding in the rain and as well as the ice, snow etc we experienced in the DFW area recently. I have have no problems with the car I have owned it for almost three years. Mileage is 18-20mpg in the city and about 25-27 highway. I looked into the Infiniti M35/45 (not as tight and worse mileage), Lexus GS-too soft & slow, Acura RL (no back space room). A6 also has great trunk room and the rear seat folds down.