What is the best way to improve the fuel efficiency of a Ford Focus?

I recently purchased a Ford Focus and I am looking for ways to improve its fuel efficiency. Any suggestions on what I can do?

Regular tune-ups and maintenance can help improve the fuel efficiency of your Ford Focus. Make sure to change your air filter, spark plugs, and oil regularly.

Avoid idling for long periods of time and try to combine errands to limit driving. This can help save on fuel consumption and improve the efficiency of your Ford Focus.

Consider using a fuel additive or switching to a higher quality gasoline to improve the fuel efficiency of your Ford Focus.