Tips for saving on gas
Limit driving as much as possible. Walk, bike, take the bus or train, or carpool whenever you can.
It's illegal to idle your car, so don't do it. You'll save on gas, too. Restarting your engine uses just as much gas as idling for 30 seconds.
Drive the speed limit and don't slam on the gas pedal. Even driving 55 miles per hour instead of 60 can get you five percent more gas mileage.
KEEP YOUR CAR HEALTHY
Regularly check your air filters. Replacing a dirty air filter will improve your gas mileage by up to 10 percent. Remember to maintain your engine, it wastes gas if it’s not in good shape.
Also, make sure your tires are inflated. Even a minor amount of underinflation can hurt your gas mileage.
Take anything you don't need out of your trunk. Your gas mileage is reduced one to two percent for every extra 100 pounds you carry in your car.
Try to do a couple of different errands at once to save time and gas, and always take the shortest route. You can also remove roof racks to reduce drag.