A European car is rated 8 L/100km. What's that in mpg?

235.214583 ÷ 8 = 29.4 mpg. It's a reasonably efficient car by US standards.

Which is more efficient: 8 L/100km or 30 mpg?

30 mpg = 7.8 L/100km, so 8 L/100km (8 vs 7.8) is marginally less efficient. Very close.

Why do I see different conversion factors (235 vs 282)?

235 is for US gallons (3.785 L/gal). 282 is for UK imperial gallons (4.546 L/gal). Always clarify which gallon is used. For UK comparisons, see [MPG (US) to MPG (Imperial)](/fuel/mpg-to-mpg-imperial/).

My car's dashboard shows 5.5 L/100km. Am I efficient?

5.5 L/100km = 42.8 mpg. Yes, that's quite efficient—better than average.

Liters Per 100 km to Miles Per Gallon (MPG) Converter

Enter a value to instantly convert between fuel economy units.

From

Precision4 dp

1 Liters per 100km = 235.2146 MPG (US)

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

mpg = 235.214583 ÷ L/100km

When comparing fuel economy specs from different countries, you'll see L/100km (Europe) vs MPG (US). These are inverse metrics—lower L/100km is better, higher MPG is better. The conversion accounts for gallon and liter definitions.

Source: NIST SP 811, Table B.8

Frequently Asked Questions

Real-World Examples

Average European car. A 10 L/100km car is 23.5 mpg in the US—typical sedan.

10 L/100km = 23.5 mpg

Efficient European sedan. 6 L/100km = 39 mpg. Good efficiency.

6 L/100km = 39.2 mpg

Excellent hybrid. 4 L/100km = 59 mpg. Exceptional efficiency.

4 L/100km = 58.8 mpg

European SUV. 12 L/100km = 19.6 mpg. Typical for larger vehicles in the metric system.

12 L/100km = 19.6 mpg

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

Liters Per 100 km to Miles Per Gallon (MPG) Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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