What are the key features of the Kia Niro's hybrid engine?

I am considering purchasing a Kia Niro and I've heard that its hybrid engine is one of its best features. Can you tell me more about it and why it stands out?

The Kia Niro's hybrid engine offers impressive fuel efficiency, with an estimated 52 city/49 highway MPG. It also has a combined system horsepower of 139, making it a powerful and efficient choice.

In addition to its efficiency, the Niro's regenerative braking system helps to recharge the battery while driving, further increasing its overall efficiency.

The Niro's hybrid engine also offers a smooth and quiet ride, making for a more enjoyable driving experience.

One of my favorite features is the Sport Mode option, which allows for a more responsive and dynamic driving experience.