How to diagnose and fix engine misfires in an Audi 80?

I've been experiencing engine misfires in my Audi 80. What could be the cause and how can I fix it?

Before diagnosing the issue, make sure to check spark plugs, ignition coils, and fuel injectors. These are common causes for engine misfires in Audi 80s.

If these components are fine, the issue might be with the engine control unit (ECU) or crankshaft position sensor. These should be checked and possibly replaced if necessary.