How to increase mileage in an Audi?

I recently bought an Audi and I am disappointed with the mileage it is giving. I was expecting better fuel efficiency. Are there any tips or tricks to increase the mileage of my Audi?

Regularly check and change your air filter. A dirty air filter can significantly reduce your fuel efficiency.

Avoid unnecessary idling. Turning off your engine when stuck in traffic or waiting for someone can save fuel and increase your mileage.

Keep your tires properly inflated. Under-inflated tires can decrease your mileage by up to 25%. Check your tire pressure once a month.