How to improve the performance of my Audi A1 engine?

I have noticed that my Audi A1's engine is not performing as well as it used to. What could be causing this and how can I improve its performance?

One possible cause could be a dirty air filter. You can improve your engine's performance by simply replacing the air filter every 12,000 miles.

Another potential cause could be a worn out spark plug. Make sure to replace your spark plugs every 30,000 miles for optimal engine performance.

You may also want to check the condition of your fuel injectors. Dirty or clogged injectors can hinder engine performance. Consider getting them cleaned every 50,000 miles.