Why is the fuel efficiency of the Audi A4 lower than its competitors?

I've noticed that the fuel efficiency of the Audi A4 is significantly lower than other luxury sedans in its class. What factors contribute to this difference?

The Audi A4 features a more powerful engine, resulting in a lower fuel efficiency compared to its competitors. However, this also means that the car offers a better driving experience with increased acceleration and responsiveness.

The Audi A4 utilizes a heavier body and other components to enhance its safety features, which can impact its fuel efficiency. Consider choosing a lighter version or opting for smaller engine sizes to improve mileage.