Why is my Vauxhall Mokka's fuel consumption increasing?

I've noticed that my Vauxhall Mokka's fuel consumption has been increasing over the past month. What could be causing this issue and how can I fix it?

One possible reason for the increase in fuel consumption is a dirty air filter. It is recommended to replace the air filter every 12,000 to 15,000 miles. Regularly checking and replacing the air filter can improve your car's fuel efficiency.

Another reason could be that your tires are under-inflated. This can cause your car to use more fuel as the engine has to work harder. Make sure to check your tire pressure regularly and inflate them to the recommended levels.

Driving habits can also play a role in fuel consumption. Avoid hard accelerations and braking, and try to maintain a steady speed on the highway. This can help improve your car's fuel efficiency.

Lastly, it's important to regularly service your car and maintain it according to the manufacturer's recommendations. This can prevent any potential issues that could affect fuel consumption.