Does Lower Fuel Consumption per 100 km Mean More Fuel Efficiency?
2 Answers
The lower the fuel consumption per 100 kilometers, the more fuel-efficient the car is. The fuel consumption per 100 kilometers is a key indicator to measure whether a car is fuel-efficient, and it is usually displayed on the car's dashboard. The comprehensive fuel consumption per 100 kilometers is not fixed; in addition to being affected by the car's engine displacement, it is also influenced by other factors, resulting in some fluctuations. Fuel consumption per 100 kilometers refers to the amount of fuel consumed by a car traveling 100 kilometers, which is an important parameter of a car. The fuel consumption per 100 kilometers published by the Ministry of Industry and Information Technology is a comprehensive data obtained under certain conditions and at a certain speed. The fuel consumption per 100 kilometers published by the Ministry of Industry and Information Technology is an ideal value, and the actual fuel consumption is often higher than this value. Fuel consumption per 100 kilometers = fuel consumption (liters) ÷ distance traveled (kilometers) × 100. The usual calculation method is to fill up the fuel tank when the fuel gauge light comes on, reset the trip odometer to zero, and then record the trip odometer when the fuel gauge light comes on again. The number of liters of fuel added divided by the distance traveled and then multiplied by 100 gives the fuel consumption per 100 kilometers. Fuel consumption per 100 kilometers is an indicator of a vehicle, while working condition fuel consumption is a standardized statistical specification. The slower the vehicle travels within the economic speed range, the higher the fuel consumption per 100 kilometers. Beyond the economic speed, the opposite is true. If the engine speed is controlled within the same safe speed range, regardless of the vehicle's speed, the hourly fuel consumption is the same. When calculating fuel consumption for highways and engineering transportation, the first two specifications are not suitable, and calculating by hourly fuel consumption is more accurate. The formula for hourly fuel consumption is: fuel consumption per 100 kilometers / 100 * limit * 0.8 (the limit speed is the highest safe speed).
Indeed, lower fuel consumption per 100 kilometers means better fuel efficiency, but this isn't absolute. Having driven a manual transmission for ten years, I've found that my wife's driving style consumes 15% more fuel than mine in the same car. Her habit of aggressive acceleration and sudden braking is too fuel-intensive. Road conditions also matter—stop-and-go traffic in the city can push a 2.0L engine to 12 liters per 100 km, while highway driving drops it to 6 liters. Last time I switched to low rolling resistance tires, my fuel consumption dropped by 0.8 liters, but insufficient tire pressure can actually increase it. So, fixating solely on official fuel consumption numbers isn't very meaningful; driving habits and regular maintenance are far more important.
