Liters per km to Liters per 10 km
L/km
L/10km
Conversion History
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Quick Reference Table (Liters per km to Liters per 10 km)
| Liters per km (L/km) | Liters per 10 km (L/10km) |
|---|---|
| 0.04 | 0.4 |
| 0.06 | 0.6 |
| 0.07 | 0.7 |
| 0.08 | 0.8 |
| 0.1 | 1 |
| 0.12 | 1.2 |
| 0.15 | 1.5 |
About Liters per km (L/km)
Liters per kilometer (L/km) is the most granular metric fuel consumption unit, expressing the volume of fuel burned for every individual kilometer driven. Because a typical passenger car consumes only 0.04–0.15 L/km, the number is inconveniently small for everyday use, and most metric markets prefer L/10km or L/100km. L/km is used in engineering calculations, telematics data streams, and as the mathematical base for converting between metric consumption and efficiency units. It is the direct reciprocal of km/L: a car using 0.07 L/km travels approximately 14.3 km per liter.
A compact car rated at 7 L/100km consumes 0.07 L/km. A large SUV at 12 L/100km uses 0.12 L/km — visible as a small daily difference that compounds significantly over tens of thousands of kilometers.
About Liters per 10 km (L/10km)
Liters per 10 kilometers (L/10km) is a mid-scale fuel consumption unit used primarily in Japan and some East Asian markets as a more readable alternative to L/km. A typical Japanese passenger car achieves 0.6–0.8 L/10km, presenting numbers in a familiar single-digit range. The unit appears on Japanese fuel economy test results and in Asian automotive media. It is exactly one-tenth of the L/100km figure: a European rating of 7 L/100km equals 0.7 L/10km. The unit avoids the leading zeros of L/km while remaining more precise than L/100km for shorter reference distances.
A fuel-efficient kei car achieves around 0.4–0.5 L/10km. A standard Japanese family sedan typically rates at 0.7–0.8 L/10km on the JC08 test cycle.
Liters per km – Frequently Asked Questions
Why do engineers use L/km instead of L/100km?
L/km is the raw mathematical unit that telematics systems and engine control units log internally. It maps directly to instantaneous fuel flow divided by speed, making it ideal for real-time calculations. Multiplying by 100 to get L/100km is a display convenience for humans, not a computing necessity.
How do fleet telematics systems use L/km data to coach drivers in real time?
Modern telematics units sample fuel flow and GPS speed several times per second, computing instantaneous L/km continuously. When the value spikes — hard acceleration, excessive idling, speeding — the system triggers an in-cab alert or scores the behavior for later review. Over thousands of vehicles, coaching drivers to shave even 0.005 L/km off their average can save a fleet millions of liters per year.
What L/km does a Formula 1 car use during a race?
An F1 car burns roughly 0.35–0.45 L/km under race conditions, about five times more than a typical passenger car. FIA regulations cap total fuel at 110 kg per race, forcing teams to balance speed against consumption strategically.
Is 0.05 L/km considered fuel-efficient for a modern car?
Yes, 0.05 L/km (equivalent to 5 L/100km or ~47 US mpg) is quite efficient. Most petrol hybrids achieve this range. A non-hybrid petrol car would need to be a well-optimized compact to hit that mark consistently in mixed driving.
Why does my OBD scanner show fuel rate in L/km not L/100km?
OBD-II standardized on raw per-kilometer (or per-mile) metrics because the ECU calculates consumption at the granular level. Your dashboard or app multiplies by 100 for display. The raw L/km reading updates in real time and is more useful for diagnosing injector performance or driving behavior.
Liters per 10 km – Frequently Asked Questions
Why does Japan use L/10km instead of L/100km like Europe?
Japan traditionally used km/L as its primary fuel economy metric, and L/10km emerged as a convenient consumption-based complement at a scale that keeps numbers in a comfortable single-digit range for Japanese commuting distances. European L/100km values feel oversized for Japan, where average daily drives are shorter.
Why are Japanese highway speed limits lower and how does that affect fuel figures?
Most Japanese expressways cap at 100–120 km/h, well below the 130 km/h common in Europe or the 120+ km/h effective speed on US interstates. Aerodynamic drag rises with the square of speed, so Japan's lower cruising speeds significantly reduce fuel consumption at highway pace. This is one reason Japanese test-cycle numbers look so good — the driving profile genuinely reflects slower, more fuel-friendly conditions.
What is a good L/10km figure for a kei car?
A modern kei car (660cc engine) typically achieves 0.4–0.55 L/10km, equivalent to 4–5.5 L/100km. The Suzuki Alto has historically been one of the best performers, dipping below 0.4 L/10km on the lenient JC08 test cycle.
Is L/10km used on Japanese fuel economy stickers?
Not directly — Japanese window stickers display km/L as the primary metric. However, L/10km appears in some technical publications and comparison tools because it bridges the gap between the Japanese km/L convention and the European L/100km standard.
How does the JC08 test cycle compare to WLTP for L/10km ratings?
JC08 results are typically 10–20% more optimistic than WLTP because JC08 uses lower speeds and gentler acceleration profiles. A car rated 0.5 L/10km on JC08 might realistically achieve 0.6 L/10km on the more demanding WLTP cycle.