Convert Imperial Gallons per 100 Miles to Liters per 100 Kilometers
Convert Imperial Gallons per 100 Miles (Imp gal/100mi) to Liters per 100 Kilometers (L/100km) instantly and accurately.
Conversion Formula
L/100km = Imp gal/100mi × 2.824809363
About Imperial Gallons per 100 Miles
Imperial gallons per 100 miles is the British volumetric consumption equivalent using the Imperial gallon (4.54609 L). Since the Imperial gallon is ~20.1% larger than the US gallon, a vehicle's Imp gal/100mi is correspondingly smaller than its US gal/100mi. A car at 7 L/100km needs 2.977 US gal/100mi but only 2.478 Imp gal/100mi. The unit appears in UK fleet management software and automotive engineering reports. A 50 mpg(Imp) car uses 2 Imp gal/100mi = 5.650 L/100km. 1 Imp gal/100mi = 4.54609/1.609344 = 2.8248 L/100km.
About Liters per 100 Kilometers
Liters per 100 kilometers (L/100km) is the standard fuel consumption unit of the EU, China, Australia, and most of the world. Lower values mean greater efficiency: 5 L/100km is exactly twice as efficient as 10 L/100km. EU WLTP certification requires reporting in L/100km; CO₂ in g/km ≈ L/100km × 23.9 (petrol) or × 26.5 (diesel). Benchmarks: European average new car (2024 WLTP) ~6.5 L/100km; compact SUV 8-11; articulated truck 28-35; M1 Abrams tank ~130. 1 L/100km = 235.215/mpg(US) = 282.481/mpg(Imp).
Quick Reference Table
| Imperial Gallons per 100 Miles (Imp gal/100mi) | Liters per 100 Kilometers (L/100km) |
|---|---|
| 1 Imp gal/100mi | 2.82481 L/100km |
| 2 Imp gal/100mi | 5.64962 L/100km |
| 5 Imp gal/100mi | 14.124 L/100km |
| 10 Imp gal/100mi | 28.2481 L/100km |
| 25 Imp gal/100mi | 70.6202 L/100km |
| 50 Imp gal/100mi | 141.24 L/100km |
| 100 Imp gal/100mi | 282.481 L/100km |