How to fix a misfiring engine in Audi 80?

I recently noticed that my Audi 80's engine is misfiring and I'm concerned about possible damage. What are the common causes and how can I fix it?

The most common cause of a misfiring engine in Audi 80 is faulty spark plugs. They should be replaced every 30,000 miles to prevent this issue. Make sure to use genuine OEM spark plugs.

Another possible cause is a clogged fuel filter. It's recommended to replace the fuel filter every 20,000 miles or if you notice a drop in engine performance. This can also help with preventing misfires.

In some cases, a misfiring engine can be caused by a faulty ignition coil. Have a mechanic check the coil's resistance and replace it if needed.