belt or chain

Hi all, Been browsing through my service book for the car and am wondering when the timing belt (or is it a chain in these things?) needs changed. Car has done 72k (ish) and I can't see any sign of it having been done before. Always been MB serviced and is due another service in about 4k. I...

What does my C220cdi have to drive the camshaft - is it a belt or chain. And what are the service requirements and replacement intervals? Thanks, David

Can someone tell me which it is, belt or chain? And how often do they need servicing? Btw is there a 'big' service on the E55 AMG other than the 'B' service? - Rich If at first you don't succeed, skydiving is not for you