Roll Up Your Windows - When traveling at high speeds, it is better to use air conditioning than to open a window - the more aerodynamic your car, the more fuel efficient it will be.
Avoid Sudden Stops and Starts - try to maintain a consistent speed. Use cruise control whenever possible and set your speedometer at 55 mph when the speed limit permits.
Maintain Your Vehicle - Underinflated tires, dirity air filters, and unchanged oil can turn even the most fuel efficient car into a gas guzzler. A good coat of wax can also reduce wind resistance and help you burn less fuel.
Eliminate Unnecessary Trips - Reduce the amount you drive. Accomplish multiple tasks with each trip or organize or join a local car pool. With the high cost of fuel these days, any little change can make a big difference. Give these tips a try, and see how much you can save!