What are the common issues with the Audi A4 engine?

I just got an Audi A4 and I've been experiencing some engine troubles. Can you tell me what are the common issues with this model?

I suggest regularly checking the oil levels and replacing the oil filter every 8,000 miles to avoid engine problems. It's also important to have the engine checked by a professional at the first sign of trouble.

One common issue with the Audi A4 engine is the timing chain tensioner failure. This can cause serious damage to the engine if not addressed immediately. I recommend having the tensioner replaced every 80,000 miles or sooner if you hear any unusual noises while driving.

Another common issue is the coolant temperature sensor failure. This can cause the engine to overheat and potentially lead to costly repairs. I recommend having the sensor checked and replaced if necessary every 50,000 miles.