My wife has had her 2011 Volkswagen Eos 2.0 petrol since new. The local Volkswagen garage recommended a timing belt change, as the car is six years old (but has only done 25K miles). They quoted quite a lot, so I called a local specialist and they told me it was a chain cam engine. From what I've found online, I think they are right, but I need to be sure. I think the 2.0 diesel maybe a belt, but you'd have thought that a Volkswagen dealer would know?