How can I diagnose a faulty spark plug in my Audi A3?

I've been experiencing engine misfires and I suspect it may be due to a faulty spark plug. How can I determine if this is the case?

Yes, a faulty spark plug can definitely cause engine misfires. To diagnose this issue, you can start by checking the spark plug wires and connections for any signs of damage or wear. If everything looks good, you can use a spark plug tester tool to determine if the spark plug is working properly. If it's not, then it's time to replace the spark plug.

I had a similar issue with my Audi A3 and it turned out to be a faulty coil pack. You can also try checking the coil pack for any signs of wear or damage, and if necessary, replace it.

Another potential cause of engine misfires could be dirty or clogged fuel injectors. Try using a fuel injector cleaner to see if it helps improve the performance of your engine.