Why is the gas mileage of my Audi A7 decreasing?

I've noticed that the average gas mileage of my Audi A7 has been decreasing over the past few months. I haven't made any major changes to my driving habits and the car seems to be running fine otherwise. What could be causing this and how can I improve my gas mileage?

There are a few possible reasons for the decrease in gas mileage. It could be due to a dirty air filter, worn spark plugs, or even low tire pressure. I recommend checking these things and getting them fixed if necessary.

Another factor to consider is your driving behavior. Aggressive driving, frequent idling, and excessive speeding can all contribute to lower gas mileage. Try to drive more efficiently and see if that improves your gas mileage.