How to diagnose and fix a faulty ignition coil in an Audi 80?

I've been having trouble starting my Audi 80 and suspect it may be an issue with the ignition coil. How can I diagnose and fix this problem?

Most likely, your Audi 80's faulty ignition coil is causing a weak spark in your engine, resulting in difficulty starting. You can use a multimeter to test the resistance of the coil and replace it if needed. Don't forget to also check the spark plugs for any damage or wear.