Liters per 10 km to Liters per 100 km
L/10km
L/100km
Conversion History
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|---|---|---|
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Quick Reference Table (Liters per 10 km to Liters per 100 km)
| Liters per 10 km (L/10km) | Liters per 100 km (L/100km) |
|---|---|
| 0.4 | 4 |
| 0.5 | 5 |
| 0.6 | 6 |
| 0.7 | 7 |
| 0.8 | 8 |
| 1 | 10 |
| 1.2 | 12 |
| 1.5 | 15 |
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.
About Liters per 100 km (L/100km)
Liters per 100 kilometers (L/100km) is the standard fuel consumption unit across the European Union, Australia, Canada, China, and most of the metric world. It expresses how many liters of fuel a vehicle burns to travel 100 km — a lower number indicates greater efficiency. Modern petrol passenger cars range from about 4 L/100km for efficient small cars to 15 L/100km or more for large SUVs and trucks. Because the unit measures consumption rather than efficiency, its relationship with km/L and mpg is non-linear: a change from 15 to 10 L/100km saves more fuel per kilometer than a change from 6 to 5 L/100km.
A Toyota Prius averages about 4.5 L/100km under EU testing. A full-size petrol SUV typically consumes 10–14 L/100km on the combined WLTP cycle.
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.
Liters per 100 km – Frequently Asked Questions
Does fuel consumption increase linearly with speed, or is there a sweet spot?
There is a sweet spot, typically between 50 and 80 km/h for most cars. Below that, the engine runs inefficiently at low load. Above it, aerodynamic drag — which scales with the square of speed — dominates. At 120 km/h a car may use 7 L/100km; at 160 km/h the same car could burn 11+ L/100km. That is why the jump from 100 to 130 km/h costs far more fuel than from 70 to 100.
What L/100km should I expect in real-world driving vs the WLTP sticker?
Most drivers see 10–25% higher consumption than the WLTP rating. A car rated at 6 L/100km will likely average 6.6–7.5 L/100km in mixed real-world conditions. Cold weather, city driving, roof boxes, and aggressive acceleration all push the number up.
How do I convert L/100km to US mpg in my head?
Divide 235 by the L/100km value. So 8 L/100km is roughly 235 ÷ 8 ≈ 29 mpg. For UK mpg, divide 282 instead. This mental shortcut is accurate enough for casual comparisons when shopping for cars across markets.
Why did Europe pick 100 km as the reference distance?
One hundred kilometers is a psychologically round number that keeps consumption figures in a convenient 3–20 range for most passenger cars. Using L/km would give tiny decimals (0.07), and L/1000km would give unwieldy large ones (70). The 100 km base hits the sweet spot for human readability.
What L/100km does a diesel car achieve compared to petrol?
Diesel engines are typically 15–25% more fuel-efficient than equivalent petrol engines. A petrol car rated at 7 L/100km might have a diesel counterpart at 5.5–6 L/100km. However, diesel fuel contains about 13% more energy per liter, so the CO₂ gap is smaller than the L/100km numbers suggest.