How to improve the fuel efficiency in my Nissan Patrol?

I've noticed that my Nissan Patrol is consuming more fuel than usual. Is there any maintenance that I can do to improve its fuel efficiency?

Regularly check your tires' air pressure as under-inflated tires can increase fuel consumption. Make sure to inflate them according to the recommended pressure by the manufacturer.

Avoid speeding and sudden accelerations. These driving habits use more fuel and increase wear and tear on your vehicle.