How do I improve the gas mileage of my Ford Focus?

I've noticed that my Ford Focus doesn't get the best gas mileage. What are some tips or adjustments I can make to improve its fuel efficiency?

A great way to improve your Ford Focus's gas mileage is to regularly check and replace your air filter. When it's dirty or clogged, it can reduce fuel efficiency by up to 10%!

Properly inflated tires can also improve gas mileage. Make sure to check the PSI and inflate your tires to the recommended level.

Avoid idling for long periods of time. If you're going to be stopped for more than a minute, turn off your engine. This can save a significant amount of fuel over time.