Fuel Economy Reference
| MPG (US) | L/100km | km/L |
|---|---|---|
| 10 mpg | 23.5 L/100km | 4.25 km/L |
| 20 mpg | 11.76 L/100km | 8.5 km/L |
| 30 mpg | 7.84 L/100km | 12.75 km/L |
| 40 mpg | 5.88 L/100km | 17 km/L |
| 50 mpg | 4.70 L/100km | 21.3 km/L |
Frequently Asked Questions
Divide 235.215 by the MPG value. Example: 30 MPG = 235.215/30 = 7.84 L/100km. Note: L/100km is inverse — lower is better; MPG is direct — higher is better.
The US gallon (3.785L) is smaller than the UK Imperial gallon (4.546L), so UK MPG is always higher than US MPG for the same vehicle. 30 US MPG = 36 UK MPG approximately.