How to improve fuel efficiency in my Audi A2?

I recently purchased a used Audi A2 and I've noticed that it's not as fuel efficient as I expected. Is there any maintenance or driving habits I can adopt to improve its fuel efficiency?

You can start by regularly maintaining your car, such as checking and replacing air filters and spark plugs. Also, make sure your tires are properly inflated and use the recommended grade of motor oil.

Changing your driving habits can also greatly impact your fuel efficiency. Avoid aggressive driving and excessive idling. Plan your trips ahead to minimize unnecessary driving and use cruise control on the highway.

Consider investing in a fuel injector cleaner or using a higher octane fuel, which can improve your fuel efficiency. And don't forget to remove any unnecessary weight in your car.