My 1997 S420 is the worst car I have ever owned! I bought it with 80,000 miles on it and now have 160,000 on it. I have a lot of problems with it. The engine is good and everything but the trim on the doors was coming off, the rear passenger side window doesn't work, the soft-close door/trunk feature doesn't work anymore, the A/C isn't as cold as it use to be, and the brakes squeak very loudy although they were replaced. The black paint is starting to show its age and rust. The front springs are squeaking and need to be replaced too. Everyone else that owns this car doesn't have these problems so maybe I got the bad apple of the bunch. I do like how solid and fast this car is at high speeds.
12-power seats with power lumbar support. Power-folding side view mirrors.
Mercedes-Benz really needs to step up the quality of their cars considering how much they cost up-front and to maintain. My next car will definitely not be a Mercedes-Benz S550!