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Fuel Economy Converter
Compare car fuel economy from the UK, US and Europe.
Popular conversions
Why UK and US mpg differ
UK mpg uses the larger imperial gallon, so the same car shows a higher mpg figure in the UK than in the US. L/100km works the other way round: lower is better. To convert UK mpg to L/100km, divide 282.48 by the mpg.
Frequently asked questions
What is 50 mpg in L/100km?
50 UK mpg is 5.65 L/100km.
Is 6 L/100km good?
Yes, 6 L/100km is about 47 UK mpg.