M119 Reigns Supreme
I have read the post by blackmercedes and couldn't agree more about the M119 engine. I have a 92' 400E with 145k miles. It has truly been a pleasure to own and drive. I can truly say that my only real costs have been tune-up parts and yes a cracked driver side mirror (my wife backed into the garage and ripped it off).
Also, while in Stuttgart, GE I had the opportunity to have lunch with some engineers from DC and they stated that the V8 E class with the M119 engine was the best engine build ever.
00 ML 430