What are the common problems with 1991 Audi 80's engine?

I just bought a used 1991 Audi 80 and I want to know about the potential issues with its engine. What should I look out for?

One common issue with the 1991 Audi 80's engine is the development of oil leaks. It's important to regularly check the oil levels and fix any leaks to avoid potential engine damage.

Another problem to watch out for is a faulty timing belt. It's recommended to replace the timing belt every 60,000 miles to prevent engine failure. Don't wait until it breaks to replace it.