How can I optimize fuel efficiency on my Ford Transit Custom?

I am a small business owner and I use my Ford Transit Custom for deliveries. However, I have noticed that my fuel expenses have been increasing. How can I improve the fuel efficiency of my vehicle without compromising its performance?

Regularly servicing your vehicle is crucial in maintaining its fuel efficiency. Make sure to change the air filters, spark plugs, and oil according to the manufacturer's recommendations.

In addition to regular maintenance, you can also try implementing fuel-efficient driving techniques such as avoiding sudden accelerations and braking, maintaining a steady speed, and reducing unnecessary idling.

Consider investing in a tuning or remapping service. This can improve the engine's performance and increase fuel efficiency. However, make sure to do thorough research and choose a reputable service provider.