Why is my Kia Niro losing fuel efficiency?

I've had my Kia Niro for a few months now and I've noticed that my fuel efficiency has been decreasing. What could be causing this and how can I improve my fuel efficiency?

One possible reason for decreased fuel efficiency could be tire pressure. Make sure your tires are properly inflated to the recommended level to improve fuel efficiency.

Another common cause could be a dirty air filter. Replace your air filter regularly to ensure optimal fuel efficiency.

It could also be due to your driving habits. Try to accelerate and decelerate smoothly and avoid idling for long periods of time.