Underinflated tires can decrease fuel economy by up to 1 mile per gallon. Slow down . The faster you drive, the more gasoline your car uses. Driving at 65 miles per hour rather than 55 miles per hour reduces fuel economy by about 2 miles per gallon. Avoid jackrabbit starts .
Abrupt starts require about twice as much gasoline as gradual starts.
Pace your driving . Unnecessary speedups, slowdowns and stops can decrease fuel economy by up to 2 miles per gallon. Stay alert and drive steadily, not erratically. Keep a reasonable, safe distance from the car ahead of you and anticipate traffic conditions. Use your air conditioner sparingly , The use of air conditioning can reduce fuel economy by as much as 2 miles per gallon under certain speeds and operating conditions.