What's the optimal driving speed to maximize your fuel efficiency? Hypermilers must be interested in this topic, especially when the gasoline price stays crazy for a long time. The answer varies in vehicle models.

In daily use of automobiles, you can reduce fuel consumption and emissions by controlling the driving speed, vehicle weight and tire pressure. Save your money, save the world!

It’s simple to understand that the heavier the car is, the more fuel it uses. Keep in mind that get the seldom-used items like roof rack out of your car, and if it’s not really necessary, do not keep your fuel tank full in daily trip.  Over time you will see the contribution of a lighter car to the fuel consumption.

Tire pressure control is also very important. If tire pressure is too low, the friction between tires and the ground increases and so does the energy consumption. In such case, fuel consumption is also increased. Pay attention to the label of tire pressure tips and control the tire pressure within a proper range.

Controlling speed is more complicated. To save money, you have to achieve the fuel-efficient speed to maximize the gas mileage.

What is fuel-efficent speed?

As the name implies, fuel efficient speed means the optimal driving speed using the least amount of fuel for the best mileages.

Fuel-efficient speed varies from car to car. Typically, 50km/h would be the fuel-efficient speed for a car with displacement no more than 1.2L, 70km/h for displacement between 1.2-1.6L, 100km/h for displacement between 1.6-2.0L, and 120km/h for displacement over 2.0L. Simply put, the larger the displacement, the lower the center of gravity and the higher fuel-efficient speed it will be.

For most of the family cars, their fuel-efficient speed ranges somewhere between 50km/ H and 80km /h. Too slow speed will lead to slow movement of pistons which may cause inadequate fuel combustion, while too high speed will bring about more resistance to the air intake. Fuel consumption will rise along with the increase of resistance coefficient.

How do I know fuel-efficient speed of my car?

In fact, it’s not that difficult, since most of the cars have “current”fuel consumption index now. You can keep the car running at some certain constant speeds, and look at the “current” fuel consumption respectively. The value that is low and stable suggests corresponding fuel-efficient speed.

And last but not least, replace the faulty car parts to improve your fuel system. Four E’s Automotive has a wide range of fuel system products for more complete fuel combustion and better fuel efficiency. Save money by partnering with us.