How to improve mileage in a Kia Niro?

I've been getting lower mileage than the advertised numbers in my Kia Niro. What can I do to improve it?

Regularly check and maintain your tire pressure. Under-inflated tires can decrease your mileage.

Keep your speed constant while driving on the highway. Sudden accelerations and decelerations can significantly impact your mileage.

Avoid carrying unnecessary weight in your car. The more weight your car carries, the more fuel it consumes.