Nothing yet.
This car is more solid at 15 years old than my dinky little brand new 2003 honda civic ex was when I acquired it.
I couldn't agree more. I just purchased a 1987 300E and it truly is a superior automobile. Even at 130k miles it rides and runs better than most new cars I have driven (including the two 2000 model year cars I own).
Just got myself a 1990 300E, manual gearbox.. Excellent car.. definitely will be improving to newer models in the future.