Fuel Economy Converter
Convert between MPG, L/100km, and km/L.
Fuel Economy Reference
| Efficiency | MPG (US) | L/100km |
|---|---|---|
| Excellent | 40+ | 5.9 or less |
| Good | 30-39 | 6.0-7.8 |
| Average | 20-29 | 8.1-11.8 |
| Poor | 15-19 | 12.4-15.7 |
| Very Poor | <15 | 15.7+ |
Understanding Fuel Economy Units
MPG (US vs Imperial)
US gallon = 3.785 liters, Imperial gallon = 4.546 liters. Imperial MPG will always be higher for the same efficiency.
L/100km
Standard in Europe. Lower is better. Inverse relationship to MPG - a car getting 30 MPG uses about 7.8 L/100km.