How do I improve my Vauxhall Crossland's fuel efficiency?

I have noticed that my Vauxhall Crossland's fuel efficiency has been decreasing. What could be causing this and how can I improve it?

The decrease in fuel efficiency could be due to factors such as low tire pressure, dirty air filters, or a faulty oxygen sensor. Regular maintenance checks and keeping up with recommended tune-ups can help improve your car's fuel efficiency.

Another way to improve fuel efficiency is by practicing eco-driving techniques, such as avoiding unnecessary idling, accelerating and braking smoothly, and keeping a consistent speed. This can also help reduce wear and tear on your car's engine and improve its overall performance.

Consider using a fuel additive or switching to a higher grade of gasoline, as these can also help improve fuel efficiency. Additionally, try to minimize the weight of your car by removing any unnecessary items, as this can also impact fuel economy over time.