Petrol have cambelt, diesel have chain.
chain
Should be a timing chain, not a belt on a C220 Diesel
Cambelt.
cambelt
cambelt
If it is a 1.9 td it is a cambelt. If it either a 2.0 citd or a 2.2 citd engine should be a camchain. If you dont know engine size look under bonnett at cover of cambelt/chain area and if it is plastic it will be a belt but if it is alloy it is a chain. Hope this helps
cambelt
cambelt
Toothed rubber Cambelt
Chain
no, it has a chain