How can I improve the gas mileage of my Audi?

I recently purchased an Audi and I noticed that it's not getting the gas mileage that was advertised. Is there anything I can do to improve it?

First, make sure your tire pressure is always at the recommended level. Under-inflated tires can greatly decrease your gas mileage.

Avoid aggressive driving, such as speeding and sudden braking. They can significantly decrease your gas mileage.

Consider getting a tune-up for your Audi. A properly maintained engine can improve your gas mileage.