How Can I Increase Fuel Efficiency in My Ford Focus?

I have a Ford Focus and I've noticed that my gas mileage isn't as high as it used to be. What can I do to improve fuel efficiency?

One of the best ways to improve fuel efficiency in a Ford Focus is to regularly maintain and replace your air filter. A dirty air filter can decrease gas mileage by up to 10%.

Another tip is to avoid accelerating too quickly and braking harshly. This can use up more fuel than necessary.

Make sure to check your tire pressure regularly. Under-inflated tires can decrease fuel efficiency.