Miles (US) per liter to Liters per 100 km
miles/L
L/100km
Conversion History
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Quick Reference Table (Miles (US) per liter to Liters per 100 km)
| Miles (US) per liter (miles/L) | Liters per 100 km (L/100km) |
|---|---|
| 6 | 10.356186536666666667 |
| 8 | 7.7671399025 |
| 10 | 6.213711922 |
| 12 | 5.178093268333333333 |
| 15 | 4.142474614666666667 |
| 17 | 3.65512466 |
| 21 | 2.958910439047619048 |
About Miles (US) per liter (miles/L)
Miles (US) per liter is a hybrid unit combining the US statute mile with the metric liter. It does not correspond to any standard national fuel economy reporting system but appears in engineering calculations, conversion utilities, and contexts where US distance and metric volume data are mixed. One US mpg equals approximately 0.4251 miles per liter. The unit is most useful for intermediate steps when converting between L/100km and US mpg without requiring a full formula — a rough mental benchmark of 12 miles per liter corresponds to about 28 US mpg or 8.3 L/100km.
A car achieving 30 US mpg travels approximately 12.7 miles per liter. A 50 mpg hybrid covers about 21.2 miles per liter of fuel consumed.
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.
Miles (US) per liter – Frequently Asked Questions
When would I ever need miles per liter as a unit?
It comes up when you buy fuel in liters but measure distance in miles — common for Americans driving in Canada or Mexico, or British drivers who use miles but buy fuel priced per liter. It is also a useful intermediate step when converting between US mpg and L/100km.
How do I convert miles per liter to US mpg?
Multiply miles per liter by 3.785 (the number of liters in a US gallon). So 10 miles per liter equals 37.85 US mpg. For UK mpg, multiply by 4.546 instead.
Is miles per liter used officially in any country?
No country uses miles per liter as its official fuel economy standard. It is a cross-system hybrid that exists purely for convenience. Countries either use km/L (Japan, India), L/100km (EU, Australia), or mpg with their local gallon (US, UK).
What miles per liter does a typical American car get?
The average new US car achieves about 7–10 miles per liter (roughly 26–38 US mpg). A full-size pickup truck manages around 5–6 miles per liter, while a Toyota Prius hybrid pushes 15+ miles per liter.
Why is fuel in Canada sold in liters but distances shown in kilometers, not miles?
Canada fully adopted the metric system in the 1970s, so both fuel and distance are metric — Canadians use L/100km, not miles per liter. The miles-per-liter scenario mainly affects Americans crossing into Canada who still think in miles but face liter-priced pumps.
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.