What are the common causes of engine misfiring in an Audi A3?

I've been experiencing sudden loss of power and strange engine noises in my Audi A3. What could be causing these issues and how can I fix them?

One common cause of engine misfiring in Audi A3 is a faulty spark plug. It's possible that the spark plug is worn out or has become contaminated, causing it to misfire.

Another possible cause is a clogged fuel injector. Dirty fuel injectors can spray fuel unevenly, resulting in engine misfires.