How do I diagnose and fix a misfiring Audi 80 engine?

I've noticed that my Audi 80 engine is misfiring and the check engine light is on. What could be causing this issue and how can I fix it?

One possibility is that there could be an issue with the spark plugs. Try removing and inspecting them for any signs of wear or damage. Also, check the ignition coils to see if they need to be replaced. Make sure to use high-quality replacement parts.

Another common cause of engine misfires in Audi 80s is a faulty oxygen sensor. Use a diagnostic tool to check for any error codes related to the oxygen sensor. If necessary, replace it with a genuine Audi part.