What can I do to improve fuel efficiency in my Vauxhall Insignia?

I've noticed that my Vauxhall Insignia has been burning through gas quite quickly lately. Is there anything I can do to improve the fuel efficiency?

Firstly, make sure you are keeping up with regular maintenance for your vehicle. This includes getting oil changes and tune-ups as recommended by the manufacturer. This will make sure your engine is running efficiently.

Another tip is to avoid aggressive driving and excessive idling. These habits can significantly decrease your fuel efficiency. Also, make sure to properly inflate your tires as underinflated tires can also decrease gas mileage.

Consider using a fuel injector cleaner every few months to keep your engine running smoothly. Additionally, using higher octane fuel may also improve your vehicle's fuel efficiency.