How do I improve the mileage of my Ford Focus?

I have a Ford Focus and I noticed that I am not getting the expected mileage. What are some tips or modifications I can make to improve the fuel efficiency of my car?

First, make sure you are regularly maintaining your car with oil changes, spark plug replacements, and tire pressure checks. Additionally, you can consider adding aerodynamic modifications such as a rear spoiler or side skirts. Finally, try to drive with a light foot and avoid excessive braking and accelerating.

In addition to maintaining your car and adding aerodynamic modifications, you can also consider switching to a more efficient air filter or adding a cold air intake. These changes can improve the air flow to your engine and ultimately improve your mileage.

Another helpful tip is to avoid idling for long periods of time and to turn off your engine when parked. This can greatly reduce unnecessary fuel consumption. Also, try to avoid carrying excess weight in your car and keep your tires properly inflated.