One problem related to engine oil leaking has been reported for the 2002 Mercedes Benz C230. The most recently reported issues are listed below.
I own a 2002 Mercedes Benz C230, which has now had 2 severe issues with it. The first issue is the electrical system - the seat control modules go faulty and start draining the battery even when the car is turned off. If you have a battery drain, this is the likely culprit. I have replaced the seat control modules a total of 3 times. This is a common problem according to internet boards. The 2nd problem is that oil started to leak all over the wires. Again another common problem according to the internet boards.