Commenters distinguish the 2006-2008 FSI engine (timing belt) from the 2008.5-on TSI (timing chain), and several actively prefer the FSI for its character and sound. The belt is treated as a time-based service: multiple threads pressed sellers on undocumented belts even at low mileage. …
FSI character, timing belt, and direct-injection quirks
Volkswagen GTI (Mk5) · factory-spec