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Convert between different units of fuel economy
Convert between different units of fuel economy. No data leaves your browser – every conversion happens locally.
30 mpg (US)
= 7.84 L/100km
40 mpg (US)
= 5.88 L/100km
6 L/100km
= 39.2 mpg (US)
8 L/100km
= 29.4 mpg (US)
10 L/100km
= 23.5 mpg (US)
Higher is better for mpg, lower is better for L/100km. MPG (miles per gallon) — more miles per gallon = more efficient. L/100km — fewer liters per 100 km = more efficient. They're inverses of each other, which is why comparing them is confusing.
US mpg vs UK mpg. A US gallon is 3.785 liters. A UK gallon is 4.546 liters. A car rated at 40 mpg (US) is only 33.3 mpg (UK). Always check which gallon a fuel economy figure uses.
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