How to troubleshoot a misfiring engine on an Audi 80?

I have an 1995 Audi 80 and it seems to be misfiring. The engine is idling rough and there is a lack of power while driving. What could be causing this issue and how can I fix it?

It sounds like the issue could be with your ignition system. I would recommend checking the spark plugs, ignition coils, and ignition control module. If any of these components are faulty, they could be causing the misfiring.

Another potential cause could be a clogged fuel injector. I suggest checking the fuel system and cleaning or replacing the injectors if necessary.

Have you checked the air filter? A dirty or clogged air filter can also cause engine misfires.