Why does my Audi A5 have poor fuel efficiency?

I recently bought an Audi A5 and I've noticed that it's not getting the advertised fuel efficiency. What could be causing this issue and how can I improve it?

There are a few possible reasons for poor fuel efficiency in your Audi A5, such as dirty air filters, low tire pressure, or a malfunctioning oxygen sensor. It's important to get your car regularly serviced to ensure it's running at its most efficient.

Another factor that could affect fuel efficiency is your driving habits. Aggressive driving, frequent idling, and speeding can all decrease your car's fuel efficiency. Consider adjusting your driving style for better fuel mileage.

Have you tried using higher octane fuel? Using premium fuel can improve your car's performance and fuel efficiency. However, it may not be cost-effective in the long run, so consider your options before making the switch.