Use the grade of motor oil your car's manufacturer recommends. Using a different motor oil can lower your gas mileage by 1%-2%.
Inflate your tires to the pressure listed in your owner's manual or on a sticker in the glove box or driver's side door jamb. This number may differ from the maximum pressure listed on your tire's sidewall.
Get regular maintenance checks to avoid fuel economy problems due to worn spark plugs, dragging brakes, sagging belts, low transmission fluid, or transmission problems.
Don't ignore the check-engine light-it can alert you to problems that affect fuel economy as well as more serious problems, even when your vehicle seems to be running fine.
Replace clogged air filters on an older car with a carbureted engine to improve gas mileage by as much as 10% and to protect your engine.
