Speed-ing puts you out of sync with the timed lights. You use more fuel idling at and accelerating from the lights. Don't carry heavy unnecessary items in your vehicle. Check your tires. If tires aren't rotated per manufacturers recommendations or properly aligned and inflated, fuel efficiency can be reduced.
Shift gears appropriately.
Generally, the higher the gear, the less fuel you use. If your vehicle is equipped with overdrive, using it will reduce the RPMs of your engine, thus reducing fuel consumption. A dirty air filter can mean poor fuel economy. With a dirty air filter your engine works harder, therefore using more fuel. If we follow these simple tips, we can do our part in helping save the environment.