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About

Automotive standards for fuel efficiency vary sharply by region. Markets in Asia and South America typically favor kilometers per liter (km/L), where a higher number indicates better economy. Conversely, Europe and Canada standardize on Liters per 100 kilometers (L/100km), a reciprocal metric where a lower number signifies efficiency. This dichotomy often confuses drivers importing vehicles, renting cars abroad, or comparing technical specifications across international borders.

Understanding this conversion is critical for budget planning on long road trips and evaluating vehicle performance. A misunderstanding of these units can lead to significant miscalculations in fuel costs. This tool performs the reciprocal conversion instantly, handling the inverse relationship between the two metrics while ensuring mathematical precision suitable for modern dashboard displays.

fuel efficiency mpg car dashboard automotive gas mileage

Formulas

The two units are reciprocals of each other, scaled by a factor of 100. The formula relies on dividing 100 by the known value.

CL/100km = 100Ekm/L

Conversely, to find kilometers per liter:

Ekm/L = 100CL/100km

Reference Data

Efficiency (km/L)Consumption (L/100km)Vehicle Type (Approximate)
520.0Heavy Truck / Supercar (Track)
812.5Large SUV / V8 Pickup
1010.0Mid-size Sedan (City)
12.58.0Crossover / Standard Sedan
14.37.0Modern Compact Car
16.76.0Efficient Hatchback
205.0Hybrid Vehicle
254.0Plug-in Hybrid (Combined)
33.33.0High-Efficiency Concept

Frequently Asked Questions

L/100km measures consumption - how much fuel you "consume" to travel a fixed distance. Using less fuel (a lower number) is better. In contrast, km/L measures range - how far you can go on a fixed amount of fuel.
Fuel consumption cannot be calculated with zero fuel or zero distance in a meaningful way for these standard units. Entering 0 will result in an error or infinite value because it implies either infinite efficiency (0 L/100km) or infinite consumption (0 km/L).
Yes. The conversion is purely mathematical and independent of fuel type. It relates distance traveled to volume of liquid used, regardless of the chemical energy density of the liquid.