How can I troubleshoot rough idling in my Audi 80?

I recently noticed that my Audi 80 is idling rough and I'm not sure how to fix it. What could be causing this issue and how can I resolve it?

One possible cause of rough idling in an Audi 80 could be a dirty or clogged air filter. Try replacing it and see if that helps.

Another potential reason for rough idling could be a malfunctioning oxygen sensor. Consider getting it checked and replaced if necessary.