How do I increase fuel efficiency in my Ford Transit Custom?

I just bought a Ford Transit Custom and I'm looking for ways to improve its fuel efficiency. Any tips or tricks would be greatly appreciated!

One of the easiest ways to improve the fuel efficiency of your Ford Transit Custom is to practice eco-driving techniques, such as avoiding rapid acceleration and maintaining a steady speed.

Regularly checking and replacing your air filter can also help improve fuel efficiency. Dirty air filters can reduce your gas mileage by up to 10%

Another tip is to make sure your tire pressure is always at the recommended level. Underinflated tires can decrease your gas mileage.