Fuel Economy Comparison
Enter two efficiency values, choose their units, and compare the normalized L/100 km estimates.
Comparison
| Option A | Option B | |
|---|---|---|
| Normalized L/100 km |
Relative difference:
Math estimate only; uses your inputs and fixed unit constants.
A QUICK WALKTHROUGH
How to use this tool
- Enter a positive efficiency value for each vehicle or option.
- Choose km/L, L/100 km, US mpg, or UK imperial mpg for each value.
- Compare the normalized estimates and relative difference; the result uses only your inputs.
Explicit unit constants
US mpg uses 235.214583 ÷ mpg and UK imperial mpg uses 282.481 ÷ mpg to produce L/100 km. km/L uses 100 ÷ km/L.
Estimate and input boundary
This is a math-only comparison. It does not use vehicle specifications, driving conditions, fuel prices, emissions data, or real-world measurements.
GOOD TO KNOW
Common questions
Which value is more efficient?
The lower normalized L/100 km value uses less fuel for the same distance under this comparison model.
Does this predict real fuel use?
No. It only compares the values you enter after unit conversion.