How to troubleshoot issues with the Audi A3 engine?

I am experiencing difficulties with my Audi A3's engine. It seems to be running rough and lacking power. What could be causing this and what steps should I take to fix it?

First and foremost, check the condition of your spark plugs and ignition coils. Worn or faulty components in these areas can greatly affect engine performance. It's important to replace them as needed to keep your A3 running smoothly.

Another common cause of engine issues in Audi A3s is a dirty or clogged air filter. Be sure to regularly clean or replace your air filter to prevent any potential problems.