What is the difference between US MPG and UK MPG?

US gallons (3.785 L) are smaller than UK imperial gallons (4.546 L). So the same car will have a higher MPG number in UK units than in US units.

How do I convert MPG to L/100km?

Divide 235.215 by the US MPG value. For example, 30 MPG = 235.215 / 30 ≈ 7.84 L/100km.

Why is L/100km inverted compared to MPG?

MPG measures distance per unit of fuel (higher = better), while L/100km measures fuel per unit of distance (lower = better). They are reciprocal measures.

What is good fuel economy?

It varies by vehicle type. Generally, under 6 L/100km (over 39 MPG US) is considered excellent for passenger cars.

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Fuel Economy Converter

Convert between fuel economy units like MPG, L/100km, and km/L. Compare vehicle efficiency across American, European, and metric standards.

Value

Result

7.84

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