The Improvements Over Gen 2
VW significantly improved the timing chain design and the oil rings, fixing the massive oil consumption issues that plagued earlier models.
- Revised timing chain and tensioner.
- Better piston ring design to prevent oil burning.
- Lighter weight and better thermal efficiency.
The Remaining Weak Points
The thermostat housing and water pump are the primary failure points, often leaking before 100,000 km.
- Plastic water pump / thermostat housing leaks.
- Carbon buildup on intake valves (direct injection).
- Turbocharger wastegate rattle (rare but expensive).