How to improve fuel efficiency in my Vauxhall Crossland?

I recently purchased a Vauxhall Crossland and I've noticed that it's not as fuel efficient as I expected. What can I do to improve its fuel efficiency?

Regularly check and replace your air filter as a dirty air filter can decrease fuel efficiency.

Try to avoid stop-and-go driving as it can use up more fuel. If possible, plan your route to have more consistent speeds.

Consider getting your tires filled with nitrogen instead of regular air as it helps maintain proper tire pressure and improves fuel efficiency.

Check your spark plugs and replace if necessary. Worn out or dirty spark plugs can decrease fuel efficiency.