Tips On Improving Fuel Economy

Regular Car Maintenance will not only improve the fuel efficiency, but also improve general performance of the car.
Maintain regular tire pressure. Refer to the psi numbers provided with the tires.
Carry lighter loads. More the weight, less the mileage. Remove all the unnecessary items from your car. Use luggage carrier only when needed.
Drive efficiently. Driving aggressively leads to low fuel economy. Avoid race-car type driving.
Cruise when on flat roads. The highest gear requires least power.
Avoid using the cruise control on hilly terrain.
Washing and waxing is supposed to improve the aerodynamics of the car, thus improving the fuel economy.
Don't sit idle. When the car is idling, it is wasting fuel. It would be better if you shut down the engine at a sustained stop.
It is widely known that putting on the car's A/C affects the mileage. In addition, keeping the car's windows down can also increase the drag generated by the car, thus affecting the mileage further.
Take one long trip instead of several short ones. The engine is more efficient when warm.