Gasoline Car pool to work, school (consider having children ride the school bus, if available or walk them to and from school if you live close enough) Avoid driving home for lunch Ensure proper tire pressure for best gas mileage Shop for the lowest priced gas on regular routes Use lowest octane fuel that the car's manufacturer approves Consider buying a car that gets better gas mileage Weigh public transportation options (save on gas, insurance, car maintenance, etc.) Don't fill the gas tank all the way up, sometimes as much as half a gallon can leak out as the gas sloshes around during travel