Audi considers the timing chains on the 2.0T to be a lifetime item, that doesn't need to be replaced. However, enthusiasts tend to know a little better.
With no service interval to go by, you have to rely on common symptoms for diagnosis. Symptoms include chain slap, due to worn tensioners and guides, causing a ?marbles in a can? sound. Failed chain guides can cause the chains to jump, and potentially snap. Since the 2.0Tt is an interference motor, a snapped or jumped chain means that valves can contact the pistons and cause catastrophic engine failure.
Kit includes: