What is the best way to increase fuel economy on a Ford Transit Custom?

I own a Ford Transit Custom and I'm looking for ways to improve its fuel economy. I've heard about different methods like changing the air filter or using premium fuel, but I'm not sure which one is best. Can anyone give me some advice on how to improve my Ford Transit Custom's fuel economy?

One effective way to increase fuel economy on your Ford Transit Custom is to make sure your tires are properly inflated. Under-inflated tires can decrease fuel efficiency by up to 3%. Keep an eye on your tire pressure and regularly inflate them to the recommended level.

Another tip for improving fuel economy is to avoid idling. If you're waiting in your Ford Transit Custom for more than 30 seconds, it's better to turn off the engine. Idling wastes a significant amount of fuel and can easily be avoided.

You can also try reducing the weight in your Ford Transit Custom. The heavier your vehicle, the more fuel it will require to move. Remove any unnecessary items from your van and you may see an improvement in fuel efficiency.