Why does my Audi A6 have poor gas mileage?

I have noticed that my Audi A6 seems to be using more gas than it should. I am wondering if this is a common issue and if there are any solutions to improve its gas mileage.

Another common culprit is low tire pressure. Make sure to check your tire pressure regularly as underinflated tires can decrease gas mileage by 0.3% for every 1 PSI of pressure below the recommended level.

Driving habits can also greatly affect gas mileage. Avoid sudden accelerations and heavy braking, and try to maintain a consistent speed on the highway. This can improve your gas mileage by up to 33%.

The most common reason for poor gas mileage in an Audi A6 is a dirty air filter. It is recommended to replace the air filter every 15,000 to 30,000 miles.