Just a word of caution from an otherwise happy S5 owner, the bucket seat Audi decided to place in the S5 is an improved version from the standard seat placed in the A5 model. The difference is the foam in the front, on the left & right that forms the bucket has a piece of steel under the foam to retain its shape. When a large guy like me sits, I like to spread my legs for comfort. This gives my stuff plenty of room to breath.
After a drive of more than 45 minutes, the steel under the foam irritates both of my thighs, and after an hour all I want to do is get out of the car. It is quite a trial on a long drive.
I am at the point to consider a new car and went to my Audi dealer to see if the 2013 S5 is the same. It was and I decided not to purchase a 2013, for that reason.