I'm reading a German car's spec sheet showing 6.5 L/100km. What is that in km/L so I can compare to Japanese cars?

100 ÷ 6.5 = 15.4 km/L. In Japan, a result of 15 km/L or above is generally considered good fuel economy for a mid-size car, so this European model is competitive.

Why does the direction of 'better' flip between L/100km and km/L?

L/100km measures how much fuel you burn (lower = better). km/L measures how far you travel per liter (higher = better). They are mathematical inverses of each other — both describe the same efficiency, just from opposite perspectives. Neither is more accurate; it's a cultural preference.

Is there a quick mental shortcut for this conversion?

Remember the number 100. If L/100km × km/L = 100, you're correct. So 8 L/100km × 12.5 km/L = 100 ✓. For rough estimates: 5 L/100km ≈ 20 km/L, 10 L/100km ≈ 10 km/L, 15 L/100km ≈ 6.7 km/L.

My car's on-board computer shows 8.3 L/100km on the highway. Is that efficient?

8.3 L/100km = 12 km/L. That's moderate — about average for a naturally aspirated mid-size sedan on the highway. A fuel-efficient compact would manage 5–6 L/100km (16–20 km/L), while a large SUV might show 11–13 L/100km (7.7–9 km/L). See also: [L/100km to mpg (US)](/fuel/l-per-100km-to-mpg/).

Liters per 100km to Km per Liter Converter

Enter a value to instantly convert between fuel economy units.

From

Precision4 dp

1 Liters per 100km = 100 Km per Liter

Key Formulas

MPG (US) → Liters per 100km

L/100km = mpg × 235.215

Liters per 100km → MPG (US)

mpg = L/100km × 235.215

Km per Liter → MPG (US)

mpg = km/L × 2.35215

MPG (US) → Km per Liter

km/L = mpg × 0.425144

Formula

km/L = 100 ÷ L/100km

European car specifications list fuel consumption in liters per 100 kilometers (L/100km) — a lower number means better efficiency. Many Asian markets instead use kilometers per liter (km/L), where a higher number is better. If you're comparing a European import against a Japanese domestic model, or reading two different spec sheets side by side, you need to flip between these two systems. The conversion is simply dividing 100 by the L/100km figure, because both units describe the same inverse relationship between distance and fuel used.

Source: NIST SP 811, Table B.8

Frequently Asked Questions

Real-World Examples

A frugal European diesel at 5 L/100km converts to 20 km/L — excellent efficiency that would top charts in Japanese ratings too.

5 L/100km = 20 km/L

A typical European family hatchback at 7 L/100km equals 14.3 km/L, a solid mid-range figure in Asian markets.

7 L/100km = 14.29 km/L

A larger SUV rated 10 L/100km is exactly 10 km/L — a convenient coincidence that makes this value easy to remember.

10 L/100km = 10 km/L

A European hybrid at 6 L/100km converts to 16.7 km/L, competitive with dedicated hybrid models sold in Japan.

6 L/100km = 16.67 km/L

mpg to l per 100km l per 100km to mpg kml to mpg mpg to kml

Liters per 100km to Km per Liter Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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