I am the only one in this thread who has mentioned the A6.
I've been Audi owner since the 80s. I'm well aware of the problems with the 5000 and the renaming. I had a 1983 5000. It was a great car as is my current A6. I never experienced the accelerator problems with my 5000. I've also owned a 1994 M5. It was a good car but I'm far happier with Audi.
You may not have had any problems with a 5000, but there were enough of some kind of problem to cause Audi to rename virtually their entire line. So, my original comment about 'negative connotations' still stands.
Audi problem never proven...just more torts for dollars crap
Any Audi with an S before the number is fine as grits