How to improve fuel economy on my Vauxhall Vivaro?

I recently purchased a Vauxhall Vivaro and am looking to improve its fuel economy. Are there any specific modifications or maintenance tasks that I can do to achieve this? Any tips or advice would be greatly appreciated.

Regularly check and replace air filters to improve air flow and increase fuel efficiency.

Keep tires properly inflated to reduce drag and improve gas mileage.

Avoid excessive idling and plan your route efficiently to save on fuel.

Consider investing in a fuel-efficient tire model or using nitrogen instead of regular air.