I am looking to upgrade from my A6 to a nice looking S4 sitting at the dealer. The car has almost 90,000 miles which for a 2.7t like mine is a lot. I was wondering if there are any major problems with the 4.2 when it gets old like this one. Thanks in advance!

 

Grab one made AFTER 10/03 and you should be alright, 2004 S4's made before that date had transmission problems and oil leaking issues. Not all, but most.