Convert common fuel-economy units locally using fixed unit relationships.
Vehicle calculations are often exact only on paper. This cluster keeps the base result while making rolling radius, gearing, wheel measurements and performance-input sensitivity visible.
Miles per gallon and km/L increase as efficiency improves, while L/100 km decreases. Converting to or from L/100 km therefore uses a reciprocal relationship rather than a simple multiplier. Keep US and Imperial gallons separate because they have different volumes.
Higher MPG means better economy, while lower L/100 km means better economy. The conversion is therefore nonlinear; an MPG difference at the low end does not represent the same L/100 km change as the same MPG difference at the high end.
US MPG and UK MPG use different gallon volumes. Keep the chosen source unit with copied values, especially when comparing vehicle specifications from different countries.
Temperature, speed, terrain, load, tire pressure, traffic, and charging behavior can move real-world consumption far from a brochure figure. Use conversion for unit equivalence, not as a prediction of a specific trip.
MPG, km/L, and L/100 km describe liquid-fuel distance efficiency. Electric-vehicle consumption such as kWh/100 km is an energy-use measure and cannot be converted directly without an energy-equivalence assumption. Use an EV-specific efficiency calculator when comparing gasoline and electric drivetrains.
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