What is the best way to improve my Ford Focus's fuel efficiency?

I recently purchased a Ford Focus and I'm trying to save money on gas. Are there any modifications or tips I can use to improve the fuel efficiency of my Ford Focus?

One of the best ways to improve fuel efficiency in any car is to properly maintain your vehicle. Make sure to keep up with regular oil changes, tire rotations, and air filter replacements. This will keep your Ford Focus running smoothly and help it achieve better gas mileage.

Consider investing in a fuel efficiency chip or module that can be installed in your car's computer system. This can help optimize your vehicle's fuel usage and potentially save you a significant amount of money in the long run.