How to increase the fuel efficiency of Audi A1?

I have noticed that my Audi A1's fuel consumption has been much higher compared to when I first purchased it. Is there any way to improve its fuel efficiency without compromising its performance?

Regularly check and replace air filters to allow for better air flow into the engine.

Avoid aggressive driving and maintain a steady speed to reduce unnecessary fuel consumption.

Consider a professional tune-up to optimize the engine's performance and fuel efficiency.