Why do Audi A3 cars have a smaller fuel tank compared to other cars?

I noticed that most Audi A3 models have a fuel tank capacity of around 13 gallons, while other cars in the same class have larger fuel tanks. Is there a specific reason for this difference?

The smaller fuel tank size in Audi A3 cars is due to their focus on fuel efficiency and weight reduction. By having a smaller tank, the car can be lighter and more agile, resulting in better fuel economy.

The smaller fuel tank in Audi A3 cars is also designed to reduce emissions and carbon footprint. A smaller tank means fewer emissions and a greener, more sustainable driving experience.