Comment by beAbU

I think it's a German thing to be honest. I've wrenched on Mercedes Benz and VW personally, and I've heard horror stories from Audi as well.

My merc exposure is both on very old (70s) and modern. So I would actually argue that over engineering shit is in their DNA, they don't know how not to do it.

My brother had an old W123 body Merc for a while. It had fucking vacuum lines running to all the doors for central locking. I had a SsangYong with an old-school Merc OM617 diesel engine in it. Great engine, and it was relatively easy to work on, but the oil filter was positioned such that you can't replace it without spilling oil all over the engine bay. Infuriating!