How can I increase the fuel efficiency of my Volkswagen Polo?

I recently bought a Volkswagen Polo and have noticed that it's not as fuel efficient as I expected. Are there any tips or tricks to improve its fuel efficiency?

Regularly check and replace your air filter to improve airflow and increase fuel efficiency.

Avoid aggressive driving and maintain a steady speed to reduce fuel consumption.

Use the recommended grade of motor oil for your Volkswagen Polo to improve fuel economy.

Keep your tires properly inflated to reduce rolling resistance and improve fuel efficiency.