Why is the Ford Fiesta's gas mileage not as efficient as other Ford cars?

I've noticed that the Ford Fiesta's gas mileage is not as efficient as other Ford cars. What could be causing this issue and how can it be improved?

It could be due to the Fiesta's smaller engine size and lack of hybrid technology compared to other Ford cars. To improve gas mileage, try to avoid hard accelerations and keep up with regular maintenance.

The Fiesta may have a lower EPA estimated fuel economy compared to other Ford cars. Additionally, your driving habits and routes may affect gas mileage. Consider using fuel-saving techniques such as coasting and driving at a steady speed.