Why is the Audi A1's fuel efficiency lower than other Audi models?

I've been looking into purchasing an Audi A1, but I noticed that its fuel efficiency is lower than other Audi models. Can anyone explain why this is the case?

The Audi A1 has a slightly bigger and heavier body compared to other Audi models, which can contribute to its lower fuel efficiency. However, it also depends on various factors such as driving habits and road conditions. To improve your fuel efficiency, try driving at a consistent speed and avoid sudden accelerations or braking.

The Audi A1 also has a more powerful engine compared to other Audi models, which requires more fuel to operate efficiently. Consider opting for the lower trim levels or diesel engine option if fuel efficiency is a top priority for you.

The body and design of the Audi A1 is optimized for performance rather than fuel efficiency. While it may not have the best fuel efficiency among Audi models, it offers a more thrilling and exciting driving experience.