How can I optimize the fuel efficiency of my 2005 Audi A2?

I recently bought a used 2005 Audi A2 and I want to maximize its fuel efficiency. What are some steps I can take to achieve this?

Ensure that your tires are properly inflated to the recommended pressure for your model for optimal mileage. In addition, regularly check and change your spark plugs and air filter to improve your engine's performance.

Consider using a fuel additive specifically designed for improving gas mileage. You can find these at most gas stations or auto supply stores. Additionally, avoid sudden acceleration and hard braking, as these can significantly reduce your fuel efficiency.

A lighter car means better fuel efficiency, so consider removing any unnecessary items from your vehicle. Additionally, try to avoid idling for extended periods of time, as this consumes fuel without moving the car.