Why is my Vauxhall Crossland experiencing poor fuel efficiency?

I've noticed that my Vauxhall Crossland is not getting as many miles per gallon as it used to. What could be causing this and how can I improve its fuel efficiency?

It could be due to a number of factors such as low tire pressure, a clogged air filter, or a faulty oxygen sensor. I recommend checking and adjusting your tire pressure, replacing the air filter if it's dirty, and getting the oxygen sensor checked by a mechanic if necessary.

If your driving habits have changed recently, it could also be affecting your fuel efficiency. Avoid unnecessary acceleration and braking, and try to maintain a consistent speed while driving.

Regular maintenance and servicing, including oil changes, can also greatly improve your Vauxhall Crossland's fuel efficiency. Make sure to follow the manufacturer's recommended schedule.