Liters Per 100 Kilometers (L/100km) Fuel Consumption Calculator

How to Calculate Fuel Consumption in Liters per 100 Kilometers (L/100km)

Calculating fuel consumption in liters per 100 kilometers (L/100km) is an essential skill for vehicle owners, especially in countries that use the metric system. It helps you understand your vehicle's efficiency and can guide decisions about maintenance and future vehicle purchases.

What is the Formula?

The basic formula for calculating fuel consumption in L/100km is:

\[ L/100km = \frac{Fuel Consumed (L)}{Distance Traveled (km)} \times 100 \]

Where:

• L/100km is Liters per 100 Kilometers
• Fuel Consumed is in liters
• Distance Traveled is in kilometers

If you want to calculate the cost per kilometer, the formula is:

\[ Cost Per Kilometer = \frac{Fuel Cost per Liter \times L/100km}{100} \]

What are the calculation steps?

1. Record your odometer reading or trip distance at the start of your journey.
2. Fill up your fuel tank completely.
3. Drive normally until your tank is nearly empty.
4. Fill up your tank again, noting how many liters it takes to fill.
5. Record your new odometer reading or trip distance.
6. Calculate the distance traveled by subtracting the initial reading from the final reading.
7. Divide the amount of fuel used by the distance traveled and multiply by 100 to get your L/100km.

Example Calculation

Let's say you drove 500 kilometers and used 40 liters of fuel. The calculation would be:

\[ L/100km = \frac{40 L}{500 km} \times 100 = 8 L/100km \]

If fuel costs $1.50 per liter, your cost per kilometer would be:

\[ Cost Per Kilometer = \frac{$1.50 per liter \times 8 L/100km}{100} = $0.12 per kilometer \]

Diagram of Fuel Consumption Calculation

The following diagram illustrates the concept of fuel consumption calculation in L/100km:

This diagram shows the relationship between fuel consumed and distance traveled. The height of each bar represents the quantity, and the ratio between them gives us the liters per 100 kilometers (L/100km).