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Convert miles per gallon (US) to gallons per 100 miles (UK)

Here you can quickly calculate how many gallons per 100 miles (UK) fit in one miles per gallon (US).
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  • 1 mpg (US) = 83.267418 gal/100 mi (UK)
  • 1 gal/100 mi (UK) = 83.267418 mpg (US)

Conversion from miles per gallon (US) to gallons per 100 miles (UK) example

  • 1 Miles per gallon (US) = 83.267418 Gallons per 100 miles (UK)

Miles per gallon (US) to gallons per 100 miles (UK) conversion table

Miles per gallon (US) Gallons per 100 miles (UK)
1 83.267418
2 41.633709
5 16.653484
10 8.326742
20 4.163371
50 1.665348
100 0.832674

Formula to convert miles per gallon (US) to gallons per 100 miles (UK)

To convert miles per gallon (US) to gallons per 100 miles (UK), divide 83.267418 by the input value.

1 mpg (US) = 83.267418 gal/100 mi (UK)
Example: 1 Miles per gallon (US) = 83.267418 Gallons per 100 miles (UK)

Common mistakes in fuel consumption conversion

  • US and UK mpg use different gallons: the imperial gallon (4.546 L) is 20% larger than the US gallon (3.785 L). The same car therefore scores about 20% higher in UK figures, 40 mpg UK ≈ 33 mpg US. Check which gallon a source means.
  • Mpg is inverted relative to consumption, so improvements are not linear: going from 10 to 20 mpg halves fuel use, while 40 to 50 mpg cuts it by only a fifth. Convert to l/100 km when comparing savings, that scale is proportional to actual fuel burned.

Quick miles per gallon (US) to/from gallons per 100 miles (UK) conversion quiz

Score: 0

5.6 gallons per 100 miles (UK) equals 8.92 miles per gallon (US).

Correct answer: 5.6 gallons per 100 miles (UK) = 14.9 miles per gallon (US).

12.7 miles per gallon (US) equals 3.28 gallons per 100 miles (UK).

Correct answer: 12.7 miles per gallon (US) = 6.56 gallons per 100 miles (UK).

5.3 miles per gallon (US) equals 31.4 gallons per 100 miles (UK).

Correct answer: 5.3 miles per gallon (US) = 15.7 gallons per 100 miles (UK).

More conversions in fuel consumption