w204 oil leak from rear of engine - are there any likely causes?

[leninsaccountant]

I recently had a full service done on my w204. The mechanic found a major oil leak coming from the rear of the engine, but because he was a mobile mechanic, wasn't able to immediately identity the problem.

I'm going to take it to a mechanic to investigate,but i'm just wondering, for people more familiar with the w204 and the engine that it uses, if there are any likely candidates for what this could be?

Thanks!

 

[markjay]

Typically it's the rear crankshaft oil seal, but there could also be very many other places the oil could have from - a heat exchanger (small radiator) is another common one. What engine does your car have?

 

[gusferlizi]

What engine does it have?

 

[leninsaccountant]

Sorry - I should of put this info in the original post. Thank you for your replies.

The car is a C220 CDI, and the engine it uses is the OM651.911.