How to Calculate Fuel Consumption per 100 Kilometers for a Car?
2 Answers
Fuel consumption per 100 kilometers is equal to the fuel consumption (in liters) divided by the distance traveled (in kilometers) multiplied by 100. The fuel consumption per 100 kilometers indicated in the manuals of domestic cars is generally the constant-speed fuel consumption. Constant-speed fuel consumption refers to the fuel economy indicator when a car is driving at a constant speed on good road surfaces. Several key technologies related to fuel consumption include three main aspects: 1. The relationship between vehicle weight and fuel consumption is directly proportional; for every 10% reduction in vehicle weight, fuel consumption will correspondingly decrease by several percentage points; 2. The car's design—smaller aerodynamic drag on the body will significantly reduce fuel consumption, and the relationship between these two is also directly proportional; 3. Road conditions are an important factor affecting fuel consumption.
I always calculate this before every long trip. First, fill up the tank until the pump automatically stops, and note down the mileage A. After driving about 100 kilometers, go back to the same gas station and fill up until the pump stops again, then record the amount of fuel added this time, B (in liters). Divide B by the distance driven and multiply by 100 to get the fuel consumption per 100 kilometers. On my last road trip, my car calculated 8.2L. The fuel consumption calculation app on my phone automatically generates a super intuitive graph, and now it can even display instant fuel consumption. Remember to use the same pump, as different gas stations have different pump pressures which can affect accuracy.
