What causes the Audi A2 to have poor fuel efficiency?

I've noticed that my Audi A2 has been using more gas than I expected. What could be causing this and how can it be addressed?

There are several factors that could contribute to poor fuel efficiency in an Audi A2. Firstly, check your tire pressure and make sure it is at the recommended level. Under-inflated tires can increase drag and decrease fuel efficiency. Additionally, regular maintenance such as changing the air filter and oil can also improve fuel efficiency.