How to improve the fuel efficiency of a Kia Sportage?

I recently bought a Kia Sportage and I've noticed that it's not as fuel efficient as I expected. Are there any tips or tricks to improve its fuel efficiency?

Regularly check and replace the air filter. A dirty air filter can reduce fuel efficiency by up to 10%

Drive at a steady pace and avoid sudden acceleration and braking. This can improve fuel efficiency by up to 33%

Make sure your tires are properly inflated. Under-inflated tires can lower fuel efficiency by 0.2% for every 1 psi drop in pressure