Why is my Kia ProCeed's fuel efficiency decreasing over time?

I bought a Kia ProCeed two years ago and it used to have great fuel efficiency, but lately I've noticed that it's been using up more gas than before. What could be causing this and what steps should I take to improve its fuel efficiency?

Hi Amy, it's normal for a car's fuel efficiency to decrease over time. The most common cause is a dirty air filter, so make sure to have it replaced regularly. You should also check your tire pressure and consider getting a tune-up.

Hey Amy, another possible reason for decreased fuel efficiency is a faulty oxygen sensor. This can be easily fixed by getting it replaced. I suggest taking your Kia ProCeed to a trusted mechanic for a proper diagnosis and solution.

Hi Amy, have you been using less premium fuel recently? Some cars, including the Kia ProCeed, have a recommended fuel type for optimal performance. Using a lower grade fuel can impact fuel efficiency. Consider switching back to premium if you've been using regular.