How can I achieve better fuel efficiency in my Ford Transit Custom?

I recently purchased a Ford Transit Custom and I've noticed that the fuel consumption is higher than I expected. How can I improve the fuel efficiency of my vehicle? Any tips or tricks would be greatly appreciated.

One way to improve fuel efficiency is to make sure your tires are properly inflated. Underinflated tires can increase fuel consumption by up to 3%.

Another tip is to avoid idling for long periods of time. It's better to turn off your engine if you're going to be parked for more than 30 seconds.

Regular maintenance, such as oil changes and tune-ups, can also improve fuel efficiency. Make sure to follow the recommended maintenance schedule for your Ford Transit Custom.