How to Calculate Fuel Consumption?
2 Answers
Fuel consumption calculation formula is: fuel consumption per 100 kilometers equals fuel consumption (per liter) divided by kilometers traveled (mileage) multiplied by 100. Constant-speed fuel consumption refers to the fuel economy indicator when a car is driving at a constant speed on good road surfaces. Since constant-speed driving is a basic operating condition for cars on highways, and this type of fuel consumption is easy to measure, it is widely adopted. A smaller body drag coefficient will significantly reduce fuel consumption. The relationship between these two is directly proportional. The engine ignition system also has a significant impact on fuel consumption. For example, inaccurate ignition timing, leaking high-voltage wires, or spark plug carbon deposits causing weak ignition can all reduce engine combustion efficiency and increase fuel consumption.
Calculating fuel consumption while driving is quite simple for me: fill up the tank before refueling, note the odometer reading, then drive normally for a few hundred kilometers, and return to the gas station to fill up again. The amount of fuel added this time is the liters consumed. Divide this liter count by the distance driven in kilometers, then multiply by 100 to get the fuel consumption per 100 kilometers. For example, last time I added 28 liters after driving 400 kilometers, which works out to 7 liters per 100 kilometers. This method is hassle-free, and keeping records in a phone note to track trends is even better—it shows how much driving habits affect consumption. Smooth highway driving saves fuel, while city traffic congestion consumes more, so I try to plan routes using provincial roads to avoid peak traffic conditions. Regularly checking tire pressure and vehicle condition also helps control fuel consumption changes, making the car more economical and practical.
