How to improve my Kia Ceed's fuel efficiency?

I just bought a Kia Ceed and I'm looking for ways to save on gas. What are some tips or modifications I can make to improve its fuel efficiency?

Regular maintenance such as changing your air filter and spark plugs can greatly improve your fuel efficiency.

Driving at a steady speed and avoiding sudden accelerations can also help save on gas.

Consider switching to low resistance tires or investing in a fuel additive to increase your car's mpg.

Make sure your tires are properly inflated to reduce rolling resistance.