Why does my Kia Niro's gas mileage fluctuate?

I've noticed that my Kia Niro's gas mileage varies greatly, sometimes getting up to 50 mpg and other times only getting 30 mpg. What could be causing this fluctuation and how can I improve the overall average gas mileage?

It's normal for gas mileage to fluctuate in vehicles, especially in newer models. Some possible causes for this could be varying driving conditions, such as traffic, weather, and terrain. To improve the overall average gas mileage, try to maintain a steady speed while driving, avoid idling for long periods of time, and make sure your tires are properly inflated.

Another possible reason for the fluctuation in gas mileage could be due to the type of gas you're using. Make sure you're using the recommended octane level for your Kia Niro. Using a lower octane level can lead to decreased efficiency and potentially impact the overall gas mileage.

It's also important to keep up with regular maintenance on your Kia Niro, such as oil changes and air filter replacements. Neglecting these tasks can affect the performance of your car and potentially lead to a decrease in gas mileage.

If you're still experiencing significant fluctuations in gas mileage, it may be worth getting your Kia Niro checked by a mechanic. There could be an underlying issue, such as a faulty oxygen sensor or fuel injector, that needs to be addressed in order to improve the overall gas mileage.