What causes the Kia Sorento to have poor fuel efficiency?

I've noticed that my Kia Sorento is not getting the fuel efficiency that I expected. I'm feeling frustrated and concerned about how much money I'm spending on gas. What could be causing this issue and what can I do to improve my fuel efficiency?

Low tire pressure can cause poor fuel efficiency because it creates more resistance on the road. Make sure to regularly check your tire pressure and inflate them to the manufacturer's recommended levels.

A dirty air filter can also decrease fuel efficiency because it restricts airflow to the engine. Make sure to replace your air filter according to your vehicle's maintenance schedule.

Driving with a heavy load can also impact fuel efficiency. Try to remove any unnecessary items from your car to decrease the weight and improve fuel efficiency.

If you notice any unusual noises or smells coming from your car, it's important to get it checked by a mechanic. This could be a sign of a larger issue affecting your fuel efficiency.