Why is the fuel economy on my Audi A4 so low?

I've noticed that my Audi A4's fuel economy is much lower than the advertised fuel efficiency. What could be causing this and how can I improve it?

There are a few factors that could be contributing to your lower fuel economy. Firstly, make sure that your tires are properly inflated and that your air filter is clean. These are simple maintenance tasks that can greatly improve your fuel efficiency. Additionally, your driving habits can also play a significant role. Try to avoid aggressive acceleration and braking, and maintain a steady speed on the highway. Another thing to consider is the type of fuel you are using. Premium gasoline may offer better performance and fuel efficiency for your Audi A4. If all else fails, it may be a good idea to take your car to a trusted mechanic for a tune-up.

It's possible that there may be an issue with your fuel injectors or spark plugs. These components are responsible for delivering fuel to your engine, so if they are not functioning properly, your fuel economy can suffer. I would recommend getting your car checked by a professional to diagnose and fix any potential issues. In the meantime, try to drive more conservatively and use a fuel additive to help clean and improve your fuel system.