How do I improve my Kia Stonic's fuel efficiency?

I recently purchased a Kia Stonic and I've noticed that I'm not getting the advertised fuel efficiency. What can I do to improve it?

Firstly, make sure you're using the correct octane fuel for your car. Using a higher octane fuel than recommended can actually decrease your fuel efficiency.

Another thing to consider is your driving habits. Avoiding harsh acceleration and braking can greatly improve your fuel efficiency. You can also try using cruise control during highway driving.

Regular maintenance, such as changing your air filter and spark plugs, can also help improve your fuel efficiency. Make sure you're following the manufacturer's recommended maintenance schedule.