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

I've noticed that my Vauxhall Insignia is not as fuel efficient as I would like. Are there any maintenance tips or driving habits I can adopt to improve its fuel efficiency?

Regularly maintaining your car, such as oil changes and tire rotations, can greatly improve its fuel efficiency. Also, avoiding aggressive driving habits like speeding and rapid acceleration can make a significant difference.

Another tip is to keep your tires properly inflated. Under-inflated tires can decrease fuel efficiency. You can check the recommended tire pressure in your car's manual and make sure to regularly check and adjust your tire pressure.

Choosing the right fuel for your car can also affect its efficiency. Make sure to use the recommended fuel type for your Vauxhall Insignia. Using a higher grade fuel can actually decrease fuel efficiency.

Lastly, avoid idling your car for extended periods of time. If you're parked and waiting, turn off the engine instead of leaving it running. This can save on fuel and reduce emissions.