Are there any common issues with the Audi 80's engine performance?

I have recently noticed some strange noises coming from my Audi 80's engine and a slight decrease in performance. I want to make sure this isn't a common issue and see if there are any recommended solutions.

It is not uncommon for the Audi 80 to experience engine issues after extended use. However, a decrease in performance can be caused by various factors and a professional diagnosis is recommended. As a temporary solution, you can try using a fuel system cleaner to see if it improves engine performance.

I have had similar issues with my Audi 80's engine and found that replacing the spark plugs and air filter helped improve performance. You may also want to consider getting a tune-up if the problem persists.

If you are experiencing strange noises from the engine, it could be a sign of low oil levels or a faulty engine mount. Make sure to check your oil levels and take your car to a reputable mechanic for a thorough inspection.