MPG to L/100km Converter
- US MPG
- 30
- UK MPG
- 36.0285
- L/100 km
- 7.84
- km/L
- 12.76
About the MPG to L/100km Converter
Fuel economy labeling splits the English-speaking world: the United States quotes miles per gallon where higher numbers mean better efficiency, while Europe, Canada, and Australia use liters per one hundred kilometers where lower numbers mean less fuel burned. UK imperial gallons are larger than US gallons, so UK MPG figures look better than US MPG for the same car unless the standard is specified. Converting between systems prevents embarrassing brags or unfair comparisons when reviewing import listings.
Hybrid and electric vehicles increasingly appear alongside legacy MPG in buyer guides, but cross-border shoppers still convert combustion ratings when evaluating grey-market imports or rental fleets abroad. Real-world economy deviates from laboratory WLTP or EPA cycles, yet label conversion remains the first step in apples-to-apples shopping.
Fleet managers operating trucks in both Mexico and Germany reconcile driver reports logged in different units when consolidating cost per kilometer dashboards. Journalists translating Paris Motor Show debuts for Detroit audiences rely on accurate conversion to explain why a sub-five liter per hundred kilometer hatchback matters in American terms.
Trip planning math differs by convention: Americans estimate gallons needed by dividing miles by MPG, while Europeans multiply liters per hundred kilometers by trip distance in hundreds of kilometers. Mental shortcuts fail if you invert the relationship incorrectly, treating L/100km like MPG directionality.
Use this converter when comparing window stickers, debating diesel versus gasoline imports, or explaining efficiency regulations in international policy articles without hand-waving factor errors.
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Frequently asked questions
L/100km = 235.215 ÷ US MPG. Example: 30 US MPG ≈ 7.84 L/100km. Lower L/100km means better economy.
UK uses imperial gallons of 4.546 liters versus US gallons of 3.785 liters. The same car shows higher MPG in UK units for identical fuel consumption.
Lower L/100km is better because it means less fuel used per distance. For MPG, higher is better—the scales invert.