How can I diagnose an engine misfire in my Audi A3?

I've been experiencing occasional sputtering and loss of power while driving my Audi A3. How can I determine if it's an engine misfire and how do I fix it?

Experiencing sputtering and loss of power while driving can be a sign of an engine misfire. To diagnose this issue, you can start by checking your spark plugs and ignition coils for any signs of wear or damage. If those appear to be in good shape, you may also want to check your fuel injectors and oxygen sensors.