How do I diagnose and fix a misfiring issue in my Audi 80?

I have noticed my Audi 80 has been misfiring and I want to address the problem before it gets worse. What could be causing this issue and what steps can I take to fix it?

The most common cause of misfiring in an Audi 80 is a faulty spark plug. Check and replace any worn or damaged spark plugs. Also, check the ignition coils for any signs of wear and tear.

Another possible cause for misfiring could be a clogged fuel injector. If this is the case, a clean or replacement of the fuel injector should fix the issue.