How can the fuel efficiency of the Vauxhall Astra be improved?

I've been noticing that my Vauxhall Astra is consuming a lot of fuel, what are some ways to improve its fuel efficiency?

Be sure to keep your tires properly inflated to reduce resistance and improve fuel efficiency.

Avoid unnecessary idling and use cruise control when possible, as both can help improve fuel efficiency.

Regular maintenance, such as replacing air filters and spark plugs, can also contribute to better fuel efficiency.