Why is my Audi A3's MPG decreasing?

I've noticed that my Audi A3's MPG has been getting lower over time. What could be causing this and what steps can I take to improve it?

One possible explanation for the decreasing MPG is a clogged air filter. Check your air filter and replace it if necessary.

Another possibility is that your tires are not properly inflated. Make sure to check your tire pressure and inflate them to the recommended level.

Regular maintenance, such as oil changes and tune-ups, can also help improve MPG. Make sure to follow the recommended maintenance schedule for your Audi A3.