I don't have the experience with MBs that you guys have but my used W210 is going on 2 years now. With 83K miles I just put front shocks and new tires on. I had a window regulator go and thats about it.

Don't freak but the kid at the Quick oil change place knows a lot about the car. The first time that I took it in for an oil change I was real nervous, but it needed to be done. The kid knew how to replace the oil filter like it was his own car. I think I'm real lucky. He also knew that it was synthetic only.

I hope this post doesn't jinx me.