How can I improve the fuel efficiency in my Nissan Navara?

I've noticed that my Nissan Navara is not as fuel efficient as I would like. What steps can I take to increase its fuel efficiency? Any tips or tricks would be greatly appreciated!

Regularly check and replace your air filter. A dirty air filter can significantly reduce fuel efficiency.

Maintain proper tire pressure. Low tire pressure can decrease fuel efficiency.

Avoid aggressive driving. Accelerating and braking harshly can consume more fuel.