How to Calculate Fuel Consumption per 100 Kilometers?
2 Answers
When buying a car, everyone can see a parameter called "MIIT Fuel Consumption," which refers to the theoretical fuel consumption per 100 kilometers measured by the manufacturer under certain standards using a dynamometer. However, actual road conditions are far from perfect, so how should we measure it? First, before testing, fill the fuel tank until the pump automatically stops ("jump gun"), reset the trip meter, turn off the air conditioning or set it to automatic mode, and adjust to your most commonly used driving mode. Then, drive as you normally would on your daily commute route and at your usual pace. Once the trip meter exceeds 100 kilometers, refuel again until the pump automatically stops. Next, divide the actual fuel consumed by the actual distance traveled, and finally multiply by 100 to obtain the measured fuel consumption per 100 kilometers. Of course, if you want a more accurate measurement, you can complete the above steps in one go. For example: When we tested the fuel consumption of the Golf GTI, it traveled a total of 253.7 kilometers and consumed 19.61 liters of fuel, so its fuel consumption per 100 kilometers was (19.61 ÷ 253.7) × 100 = 7.7L/100km. Have you learned how to calculate fuel consumption per 100 kilometers?
I've been driving for decades, and calculating fuel consumption per 100 kilometers is actually quite simple: fill up the tank and note the mileage, then at the next refueling, see how many liters you've added, divide that by the kilometers driven between the two fill-ups, and finally multiply by 100 to get the result. For example, if you drove 500 kilometers using 50 liters of fuel, that would be (50÷500)×100=10 liters/100 km. There are quite a few factors that affect fuel consumption, with driving habits being the top reason—rapid acceleration and hard braking will use more fuel; vehicle condition is also important, such as underinflated tires increasing rolling resistance, or an old air filter making the engine less efficient; and then there's road conditions, with city traffic jams leading to higher consumption, while steady speeds on highways are the most fuel-efficient. I regularly check these things to save fuel, after all, every liter counts.
