Why does my Audi A3 have poor fuel economy?

I have noticed that my Audi A3 is not getting the advertised fuel efficiency. What could be causing this and how can I improve it?

The most common cause of poor fuel economy is dirty air filters. Make sure to regularly clean or replace the air filters in your Audi A3.

Another factor to consider is the type of fuel you are using. Premium fuel may be recommended for your Audi A3 for optimal performance and fuel efficiency.

In some cases, a faulty oxygen sensor can also affect fuel economy. Have it checked and replaced if necessary.