How can I improve my Kia Rio's gas mileage?

I'm looking to save some money on gas and make my Kia Rio more efficient. Is there any maintenance or upgrades I can do to improve its gas mileage?

A simple and inexpensive way to improve gas mileage is by keeping your tires properly inflated. This can improve fuel efficiency by up to 3%.

Regularly changing your air filter can also help improve gas mileage. A dirty air filter can reduce fuel efficiency by up to 10%.

Another factor to consider is your driving habits. Aggressive driving, such as speeding and rapid acceleration, can significantly decrease gas mileage.

If you're willing to invest a bit more, you can also look into upgrading to a more efficient engine or installing a fuel-saving device.