How can I diagnose a misfire on my Audi 80?

I have been experiencing occasional misfires on my Audi 80. It feels like the engine is struggling and there is a noticeable lack of power. I have checked the spark plugs and they seem to be in good condition. What could be causing this issue?

One possible cause of a misfire in an Audi 80 is a faulty ignition coil. These components can wear out over time and fail to provide the necessary spark to the spark plugs. I would recommend getting the ignition coil tested and replaced if needed.