How to improve gas mileage in the Vauxhall Grandland?

My gas mileage seems to be lower than what the manufacturer claims. How can I improve it without making any modifications to my car?

Make sure your tires are properly inflated. Under-inflated tires can result in higher fuel consumption.

Avoid unnecessary idling. Idle for no more than 30 seconds, after that, turn off your engine.

Use cruise control on the highway. This can help maintain a consistent speed, resulting in better fuel efficiency.

Avoid aggressive driving. Rapid acceleration and hard braking can significantly reduce your fuel efficiency.