Best Ways to Improve Gas Mileage on a Ford Transit Custom?

I just bought a new Ford Transit Custom and I'm looking for ways to improve my gas mileage. Any tips or tricks that have worked for you?

I would recommend investing in a high-quality air filter. A clean air filter can improve gas mileage by up to 10%. Make sure to change it regularly.

Another tip is to properly inflate your tires. Under-inflated tires can decrease gas mileage by 0.2% for every 1 psi drop in pressure. Keep them inflated to the recommended pressure for optimal fuel efficiency.

Avoid idling for too long. If you're going to be stopped for more than 30 seconds, it's more fuel-efficient to turn off your engine and restart it when you're ready to go.