When do you change timing chain on 2011 Audi A3?

The timing chain on a 2011 Audi A3 is designed to last the lifetime of the engine, typically requiring no replacement unless there are signs of wear or failure. However, it's advisable to inspect the timing chain and associated components during routine maintenance, especially if the vehicle has high mileage (over 100,000 miles). If you notice unusual noises, engine performance issues, or a check engine light, it's best to have it checked by a professional. Always refer to the owner's manual for specific maintenance recommendations.