The '94-'95 C280's could have a bad engine wiring harness, and the oil leak at the head gasket would affect '94-'97 models.
You may try the search function on either of these topics. The archives are full of information on both of the issues.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".