How can I improve my Audi A3's fuel economy?

I have noticed that my Audi A3's fuel economy has been decreasing lately. Are there any tips or techniques that I can use to improve it?

One way to improve your Audi A3's fuel economy is by properly inflating your tires. Under-inflated tires can significantly decrease your fuel efficiency. Make sure to check your tire pressure regularly and keep them at the recommended levels.

Another tip is to avoid speeding and aggressive driving. These types of driving habits can use up more fuel than necessary. Try to maintain a constant speed and avoid rapid acceleration or braking.