The A8 is by far the sweetest car I have owned. It's the only luxury car with all-wheel-drive (great for getting to and from Lake Tahoe in the winter snow season). It handles like a dream even with large mud and snow tires. I generally drive in automatic mode, but the Tiptronic shifting is fun when I am in a "playful" mood. Gas mileage has been very acceptable in the 20+ MPG range. It's been extremely dependable and Audi covers 100% of all regular maintenance, even replacement of wiper blades. The L version is best if you want lots of room in the rear. All in all the A8 is a great car for the money! Go with the S8 if want even more than 310 HP (but the A8 is plenty fast for me).
Wanted a full-sized luxury sedan but RWD BMW 7-series too risky for midwest winters. Went with A8L because of 4WD. Very happy with car. Definitely more comfortable seats than MB S430. Original tires were Dunlop 8000 performance tires but ride was too rough so dealer switched them to Toyo and ride much better. Will get much better milage with 18" wheels but less ride comfort. I'm getting 22mpg city and 29mpg highway! There's nothing this car can't do. It's awesome!
fun. fun. fun. esp for such a large luxury sedan. we wanted a high performance car as well as something large enough to travel with small children. I cannot say enough about the performance for such a large vehicle. this car purrs like a cat at 2500-2800 rpm (95 mph) which is about the perfect cruising speed. Too bad we dont have an autobahn. fuel economy is good 17.5 in town 25.5 hwy w/ lead foot. minimal upkeep, great service and the finish/ trim is immaculate, even after 2 yrs