Understanding Fuel Consumption Conversion

Fuel consumption is measured differently around the world. The United States uses miles per gallon (mpg), while most other countries use liters per 100 kilometers (L/100km).

Conversion Formulas

US mpg to L/100km: 235.214583 / mpg
UK mpg to L/100km: 282.4809363 / mpg
L/100km to US mpg: 235.214583 / L/100km
L/100km to UK mpg: 282.4809363 / L/100km

Practical Examples

A car getting 30 mpg (US) consumes approximately 7.84 L/100km
A European car rated at 5.5 L/100km gets approximately 42.77 mpg (US)
UK figures are approximately 20% higher than US figures due to the larger imperial gallon

Reference Table

US mpg	UK mpg	L/100km
10	12	23.52
20	24	11.76
30	36	7.84
40	48	5.88
50	60	4.70

Frequently Asked Questions

Why are US and UK mpg different?

The US gallon is approximately 3.785 liters, while the UK (imperial) gallon is approximately 4.546 liters. This means UK mpg figures are about 20% higher than US figures for the same fuel consumption.

Which measurement is more efficient?

Lower L/100km values indicate better fuel efficiency, while higher mpg values indicate better efficiency. The measurements are inversely related.

Why do European cars use L/100km?

The L/100km measurement provides a linear relationship between distance traveled and fuel consumed, making it easier to calculate fuel costs for trips and compare vehicle efficiency.

Fuel Consumption Converter

Common Fuel Consumption Values

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Fuel Consumption Converter mpg to L per 100km

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