Re: Slk350
Have found out a lot more - the balance shaft issue in the 2004-2008 272 (3.5 V6) resulted in a class action suit that was successful and extended the warranty to 10 year/125,000 miles or paid $4000 for the repair.
If anyone is thinking about one of these cars make sure the balance shaft gear, balance shaft, and timing chain has been replaced per MB Order S-B-03.30/08.
Since am equipped to repair such is no big but would be looking at a much lower than KBB price.
Guess we should be happy to have cars of the same years but the previous engine.