Fuel consumption Converters

Fuel consumption measures how much fuel a vehicle uses relative to the distance it travels. Two opposing conventions exist: distance-per-volume units (km/L, mpg) express efficiency — higher is better; volume-per-distance units (L/100km, gal/100mi) express consumption — lower is better. This inverse relationship makes conversions non-linear: halving L/100km does not double mpg proportionally. The metric standard across Europe, Australia, Canada, and China is liters per 100 kilometers (L/100km). The United States uses miles per gallon based on the US gallon (3.785 L). The United Kingdom traditionally uses miles per gallon based on the larger imperial gallon (4.546 L), making UK mpg figures roughly 20% higher than equivalent US mpg for the same vehicle — despite sharing the same abbreviation and appearing to measure the same thing.