How to increase the fuel efficiency of my Vauxhall Mokka?

I have been noticing that my Vauxhall Mokka is not getting as good fuel efficiency as it used to. What can I do to improve its fuel efficiency and save on gas costs?

Regularly check and replace your air filter. A clogged air filter can decrease fuel efficiency.

Make sure your tires are properly inflated. Underinflated tires can decrease fuel efficiency.

Avoid aggressive driving and speeding. Both of these can significantly decrease fuel efficiency.