How to increase fuel efficiency in Vauxhall Vivaro?

I recently purchased a Vauxhall Vivaro and I am looking for ways to improve its fuel efficiency. Any tips or suggestions would be greatly appreciated.

Regularly servicing your Vauxhall Vivaro can greatly improve fuel efficiency. Make sure to follow the manufacturer's recommended service schedule.

Check your tire pressure regularly and keep them properly inflated. Underinflated tires can decrease fuel efficiency.

Avoid idling for extended periods of time and turn off the engine when you are not driving. This can save a considerable amount of fuel.

Consider installing a more aerodynamic body kit on your Vauxhall Vivaro. This can reduce drag and improve fuel efficiency.

Try driving at a more consistent speed and avoid sudden accelerations or decelerations. This can help improve fuel efficiency.