L'efficacité énergétique (volume) est le rapport de la distance parcourue au volume de carburant consommé, généralement mesuré en kilomètres par litre (km / L).
1 L/100mi = 0.425 mi/100L 
1 mi/100L = 2.352 L/100mi 
Exemple: 
Convertir 15 Litres pour 100 miles en Miles par 100 litres:
15 L/100mi = 6.377 mi/100L 
| Litres pour 100 miles | Miles par 100 litres | 
|---|---|
| 0.01 L/100mi | 0.004 mi/100L | 
| 0.1 L/100mi | 0.043 mi/100L | 
| 1 L/100mi | 0.425 mi/100L | 
| 2 L/100mi | 0.85 mi/100L | 
| 3 L/100mi | 1.275 mi/100L | 
| 5 L/100mi | 2.126 mi/100L | 
| 10 L/100mi | 4.251 mi/100L | 
| 20 L/100mi | 8.503 mi/100L | 
| 30 L/100mi | 12.754 mi/100L | 
| 40 L/100mi | 17.006 mi/100L | 
| 50 L/100mi | 21.257 mi/100L | 
| 60 L/100mi | 25.509 mi/100L | 
| 70 L/100mi | 29.76 mi/100L | 
| 80 L/100mi | 34.012 mi/100L | 
| 90 L/100mi | 38.263 mi/100L | 
| 100 L/100mi | 42.514 mi/100L | 
| 250 L/100mi | 106.286 mi/100L | 
| 500 L/100mi | 212.572 mi/100L | 
| 750 L/100mi | 318.858 mi/100L | 
| 1000 L/100mi | 425.144 mi/100L | 
| 10000 L/100mi | 4,251.438 mi/100L | 
| 100000 L/100mi | 42,514.375 mi/100L |