Why is my Kia Niro experiencing decreased fuel efficiency?

I've noticed that my Kia Niro's fuel efficiency has been decreasing recently. What could be causing this issue?

It is possible that your tires may be underinflated, causing the car to use more fuel. Check the tire pressure and inflate if necessary.

Another reason for decreased fuel efficiency could be a clogged air filter. Make sure to clean or replace the air filter regularly to improve fuel efficiency.

If you regularly drive in stop-and-go traffic, this can also contribute to decreased fuel efficiency. Try to find alternative routes or times to avoid heavy traffic.