1) Pump up your tires.
Keeping your tires inflated is one of the easiest and most important things Saving petrol means saving money one can do to improve fuel economy. If a range is recommended by the manufacturer, the higher pressure should be used to maximize fuel efficiency. Deflated tires run hot and jeopardize safety. It will also cause the tires to wear out prematurely, affect the vehicles adversely, and hurt the fuel economy by increasing the rolling resistance.
Tires lose about 1 psi pressure per month due to air loss caused by the tire hitting holes, bumps and curbs. Therefore, the tires should be checked at least once a month. Just 1 tire deflated by 2 psi will result in a 1% increase in fuel consumption.
2) Drive at moderate speed.
Avoiding high speeds on open roads results in safer driving and better fuel economy. In highway driving, over 50% of the power produced by the engine is used to overcome aerodynamic drag. Drag and thus fuel consumption increases rapidly at speeds above 90km/h. On the average, a car uses about 15% more fuel at 100km/h, and 25% more fuel at 110km/h compared to when it is
doing only 90km/h. However, this should not lead one to conclude that the lower the speed, the better the fuel economy – because it is not. The fuel consumption of an average car increases sharply at speeds below 50km/h.
