UK MPG to US MPG Converter — Convert Miles Per Gallon Between UK and US Standards

UK MPG to US MPG Converter

Convert fuel efficiency between UK MPG (miles per imperial gallon) and US MPG (miles per US gallon). Understand the difference between measurement standards for accurate comparisons.

UK MPG to US MPG

40

About UK MPG

UK MPG uses the imperial gallon, which is approximately 4.546 litres. This is different from the US gallon, which is approximately 3.785 litres.

US MPG to UK MPG

33.3

About US MPG

US MPG uses the US gallon, which is approximately 3.785 litres. This is different from the imperial gallon used in the UK, which is approximately 4.546 litres.

MPG Conversion Results

Conversion
Vehicle Comparison
Formula

UK MPG to US MPG

33.3
40 UK MPG equals 33.3 US MPG
UK MPG
40.0
US MPG
33.3
L/100km (UK)
7.1
L/100km (US)
7.1

Vehicle Fuel Efficiency Comparison

Vehicle Type UK MPG US MPG L/100km

MPG Conversion Formula

UK MPG to US MPG = UK MPG × 0.832674

To convert UK MPG to US MPG: Multiply the UK MPG value by 0.832674. This accounts for the difference between imperial and US gallons.

US MPG to UK MPG = US MPG ÷ 0.832674

To convert US MPG to UK MPG: Divide the US MPG value by 0.832674. This accounts for the difference between US and imperial gallons.

MPG to L/100km Conversion

To convert MPG to liters per 100km: Divide 282.48 by the MPG value for UK measurements, or 235.21 for US measurements.

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