How to Calculate Fuel Consumption Formula and Cost per Kilometer?

[VonEmmanuel]

Fuel consumed ÷ Distance traveled × 100 = Fuel consumption per 100 kilometers; The data on fuel consumed is relatively difficult to obtain. Generally, a full fuel tank is used as the initial data. After driving a certain distance, the tank is refilled to full, and the refueling data provided by the gas station is taken as the standard. Below are the specific steps for calculating fuel consumption: 1. Method: First, fill the vehicle's fuel tank to full, then reset the odometer to zero, and proceed to drive. After driving 200 kilometers, enter a gas station to refuel. When the tank is full, the fuel dispenser shows 15 liters. According to the formula (15 ÷ 200 × 100 = 7.5), the vehicle's fuel consumption per 100 kilometers is 7.5L. 2. Notes: Individual driving habits, road conditions, vehicle load, tire pressure, and weather conditions can all affect fuel consumption, making it vary. A more scientific method for calculating fuel consumption involves calculating the average. Drive the vehicle for 10,000 kilometers, record the data after multiple refueling sessions during this period, then take the average of the highest and lowest fuel consumption values. This method yields relatively more scientific data.

[DelRyan]

I'm someone who commutes by car frequently. The formula to calculate fuel consumption per kilometer is actually quite simple: the amount of fuel refilled (in liters) divided by the distance traveled (in kilometers). For example, last time I filled up my tank before driving and noted the odometer was at 1000 kilometers. After driving 500 kilometers, I returned to the gas station and refilled with 40 liters of fuel. So, the fuel consumption per kilometer is 40 liters ÷ 500 kilometers = 0.08 liters/km. Over time, I've noticed that driving habits can significantly affect the result. For instance, frequent hard acceleration and braking can increase fuel consumption a lot, whereas maintaining a steady speed around 70 km/h is much more fuel-efficient. Vehicle weight and road conditions are also crucial; carrying a full load or driving uphill will definitely raise the numbers. I recommend resetting the odometer right after refueling and recording it directly the next time you fill up—it's accurate and easy to remember. Developing this habit not only helps save money but also prevents potential car issues, like low tire pressure or engine carbon buildup.

[SanWillow]

I'm a tech enthusiast who's been studying cars for years. The basic formula for calculating fuel consumption per kilometer is the total amount of fuel consumed divided by the total distance traveled, specifically, the number of liters of fuel filled divided by the kilometers driven. There are many details behind this, such as air resistance or engine efficiency. When the speed exceeds 100 km/h, wind resistance increases, leading to higher fuel consumption. Modern cars have onboard systems that automatically display this value, but manual calculation is more reliable: fill up the tank and note the starting mileage, drive a certain distance, then fill up again to see how many liters were added and the distance covered. For example, if you drive 300 kilometers and then add 24 liters of fuel, the consumption per kilometer is 24÷300≈0.08 liters. Major factors affecting fuel consumption include using the air conditioning and vehicle weight—when fully loaded for a trip, fuel consumption can skyrocket. By checking regularly, I've found that the most economical speed is between 80-90 km/h, and optimizing driving habits can also extend engine life.

[SanJoshua]

I just got my driver's license. My instructor taught me a super simple fuel consumption formula: note the mileage when the tank is full, refill it after driving and check how many liters were added, then divide the fuel amount by the kilometers driven. For example, if you drove 200 km and refueled 15 liters, the consumption per kilometer is 15÷200=0.075 liters. This calculation helps me control expenses and reduces unnecessary hard braking habits. Since I mostly drive short commutes, calculating once or twice a month is enough—it's worry-free and practical.