How do I maintain the fuel economy on my Ford Mondeo?

I recently purchased a Ford Mondeo and I'm finding that the fuel economy is not as good as I expected. What tips or tricks can I use to improve the fuel efficiency of my car?

Regularly check and replace your air filter. A dirty air filter can significantly decrease your fuel economy.

Monitor your tire pressure and make sure they are inflated to the recommended levels. Low tire pressure can decrease your fuel efficiency.

Avoid heavy acceleration and braking. Gradual acceleration and braking can help improve your fuel economy.