Recently saw user reports that some of 05.5 - 06 Jetta TDIs have engine Cam excessive wear and DSG DMF failure. Both are not under recall but if your car is under power train warranty and experience abnormalities in those areas, see dealer for repair.
If you are out of warranty, you can continue to drive it until those become bigger issues, each will cost about one grand.
If you are out of warranty, you can continue to drive it until those become bigger issues, each will cost about one grand.