How to improve the mileage of my Kia Picanto?

I have a Kia Picanto and I noticed that the mileage is not as good as it used to be. What are some tips and tricks I can do to improve the mileage of my car?

One of the first things you can do is to regularly check your tire pressure. Underinflated tires can significantly decrease your car's fuel efficiency.

Try to avoid idling for too long. Idling for more than 30 seconds uses more fuel than restarting your car.

Consider replacing your air filter. A clogged air filter can decrease your car's fuel efficiency by up to 10%.

Another tip is to avoid aggressive driving. Accelerating and braking quickly can use up more fuel.