Why is the Ford Fiesta known as a fuel-efficient car?

I'm considering buying a Ford Fiesta, but I'm wondering if it's really as fuel-efficient as people claim. Can anyone explain the technology behind its fuel efficiency and if it's worth the investment?

The Ford Fiesta's fuel efficiency is mainly due to its advanced engines and lightweight design. I would highly recommend going for it if you want to save on gas.

I used to own a Fiesta and can confirm that it's indeed a fuel-efficient car. Its EcoBoost engine is designed to maximize fuel efficiency without sacrificing performance.

I've been driving a Fiesta for years and I can say that it's a great choice for city driving. Its small size and efficient engine make it easy to navigate through traffic and save on gas.