How to increase the fuel efficiency of my Vauxhall Corsa?

I've noticed that my Vauxhall Corsa's fuel efficiency seems to be decreasing. What can I do to improve it?

Regularly checking and replacing your car's air filter can significantly improve your fuel efficiency. A dirty air filter can restrict airflow to the engine, causing it to work harder and use more fuel than necessary.

Ensuring your tires are properly inflated can also greatly affect your fuel efficiency. Under-inflated tires create more resistance, causing the engine to work harder and use more fuel. Check your tire pressure regularly and inflate them to the recommended level.

Avoid aggressive acceleration and braking as this can waste fuel. Instead, try to maintain a steady speed while driving and use cruise control when possible.