2007 Audi S8 quattro 4dr Sedan AWD (5.2L 10cyl 6A)
I bought my S8 because I believed it would be a fun-to-drive, relatively light weight fast sedan. It has ponderous handling, shifts erratically, and is full of insanely complicated, useless electronics. The suspension lowers itself after parking, so that the car has to be parked rear-end-first so the front doesn't hang up on the curb. I tried to give it back the 2nd day I had it, but Audi refused, as S8s are special order.
It's a very good looking car.
Too many to catalogue, but trimming down the thoroughly useless electronics would be a good start. The car has a 400 page operating manual plus a 200 page manual for the MMI.