How to Calculate Car Fuel Consumption?

2 Answers
Londyn
07/24/25 11:37pm
Car fuel consumption calculation method: Car fuel consumption equals the volume of a certain amount of fuel divided by the distance the car can travel with that amount of fuel. Fuel consumption generally refers to how many liters of fuel are burned per 100 kilometers. Fuel consumption is not absolute and is related to factors such as personal driving habits, vehicle load, and road conditions. Constant-speed fuel consumption: Constant-speed fuel consumption refers to the fuel economy indicator when a car is driving at a constant speed on a good road surface. Since constant-speed driving is a basic operating condition for cars on highways, this type of fuel consumption is easy to measure and widely adopted. Road cycle fuel consumption: Road cycle fuel consumption is the fuel economy indicator measured when a car drives on the road according to specified speed and time specifications in repeated cycles, also known as multi-condition road cycle fuel consumption.
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LaRuby
08/10/25 3:27pm
To understand how to calculate car fuel consumption, I have a simple method to share. First, fill up the tank with fuel and note the odometer reading. Then drive until the fuel light comes on or before the next refueling, and check the odometer again. Calculate the amount of fuel added in liters divided by the distance traveled in kilometers during that period, then multiply by 100 to get the fuel consumption per 100 kilometers. For example, if I added 50 liters of fuel and drove 600 kilometers, the calculation would be (50 ÷ 600) × 100 ≈ 8.3 liters/100 km. In reality, fuel consumption varies greatly; traffic congestion can easily increase consumption by an extra liter or two, while steady-speed highway driving saves fuel. I also record data using an app to track trends over time. If fuel consumption suddenly increases, I can check tire pressure or whether the air filter needs cleaning to prevent minor issues from becoming major problems.
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