How to troubleshoot an engine misfire in an Audi A5?

I've noticed my Audi A5 has been experiencing a rough idle and loss of power. How can I diagnose and fix an engine misfire issue?

First, it's important to identify the specific cylinder that is misfiring. You can use a diagnostic tool or scan tool to retrieve the trouble code and determine the affected cylinder. Then, check the spark plug and ignition coil for that cylinder and replace if necessary.

Another common reason for engine misfires in Audi A5s is a faulty fuel injector. You can use a mechanic's stethoscope to listen for a clicking sound while the engine is running. If there is no sound, the fuel injector may need to be replaced.