How to troubleshoot a faulty ignition coil in an Audi 80?

While driving my Audi 80, I noticed a decrease in engine power and some hesitation when accelerating. After doing some research, I suspect that the ignition coil might be faulty. What steps should I take to troubleshoot and potentially replace the ignition coil?

Before replacing the ignition coil, it's important to diagnose the issue properly. Start by checking the spark plugs and wires for any damage or wear. If they appear to be in good condition, then you can move on to testing the ignition coil itself. It's also a good idea to check the battery and make sure it's fully charged, as a weak battery can affect the performance of the ignition coil.