Here is what the inside of your engine looks like after 120,000 kms if you follow the factory oil change intervals of around 12,000 kms on your Turbocharged VW or Audi.
These engines really need more frequent oil changes, we recommend every 6,000 kms for a Turbo engine and 8,000 kms for non-turbo. You should also use the best oil available, preferably something specifically formulated for your engine. We recommend either Motul or Liqui-moly, both use high quality european synthetic base stock that isn't found in the majority of oils. A good OEM filter is a must and only cost a few dollars more than the bargain brands.