How Can I Increase My Ford Transit Custom's Fuel Efficiency?

I recently purchased a Ford Transit Custom and have noticed that it's not as fuel efficient as I would like. What are some tips and tricks for improving fuel efficiency in this specific model?

Regularly checking and replacing air filters can greatly improve fuel efficiency. Also, try to avoid excessive idling and keep your tires properly inflated.

Cruise control can also help improve fuel efficiency on long drives. It maintains a consistent speed and can help you avoid harsh acceleration and braking.

Consider investing in a fuel efficiency device such as a fuel economy chip. These are designed specifically for your vehicle and can help optimize fuel usage.