How can I improve fuel efficiency in my Vauxhall Vivaro?

I've noticed that my Vauxhall Vivaro's fuel efficiency has been decreasing lately. What are some steps I can take to improve it?

One way to improve fuel efficiency in your Vauxhall Vivaro is by regularly maintaining your vehicle. This includes keeping your engine tuned and changing your oil and air filter on a regular basis.

Optimizing your driving habits can also make a big difference in fuel efficiency. This includes avoiding excessive idling, maintaining a steady speed, and avoiding quick accelerations and decelerations.

Consider installing aerodynamic upgrades, such as a front air dam or a tonneau cover, to reduce wind resistance and improve fuel efficiency.