How to optimize the fuel efficiency of my Kia Ceed?

I've been using my Kia Ceed for a while now and noticed that the fuel consumption is higher than expected. What can I do to improve its fuel efficiency?

Regularly maintain your car by changing filters and spark plugs.

Avoid aggressive driving and try to maintain a steady speed while on the road.

Check your tire pressure regularly and make sure they are properly inflated.

Consider using a fuel additive to improve engine performance and mileage.