What is the best way to improve the fuel efficiency of my Ford Fiesta?

I recently bought a Ford Fiesta and I love it, but I do notice that I have to refuel frequently. Is there anything I can do to improve its fuel efficiency?

One way to improve the fuel efficiency of your Ford Fiesta is to regularly check and replace your air filter. A dirty air filter can decrease the fuel economy of your car by up to 10%. Make sure to replace it every 12,000-15,000 miles for optimal performance.

Another tip is to avoid excessive idling. If you're stuck in traffic or waiting for someone, turn off your engine. Idling can waste up to a quarter gallon of gas per 15 minutes.