How do I fix the rattling noise in my Audi 80's engine?

I have recently noticed a rattling noise coming from my Audi 80's engine. It seems to be getting louder and more frequent. What could be causing this and how can I fix it?

The most common cause of an engine rattling noise in an Audi 80 is a loose or worn out timing belt or chain. You should have a mechanic check and replace these if necessary.

Another possible cause of a rattling noise is a loose accessory belt. You can try tightening or replacing the belt to see if that solves the issue.