Convert Miles per Imperial Gallon to Liters per 100 Kilometers
Convert Miles per Imperial Gallon (mpg (Imp)) to Liters per 100 Kilometers (L/100km) instantly and accurately.
Conversion Formula
L/100km = 282.4809363 ÷ mpg (Imp)
About Miles per Imperial Gallon
Miles per Imperial gallon (mpg(Imp)) is the UK and historically Commonwealth standard. The Imperial gallon (4.54609 L) is ~20.1% larger than the US gallon, so mpg(Imp) is always numerically higher: a 7 L/100km car achieves 33.6 mpg(US) but 40.4 mpg(Imp). All UK VCA-certified specs list mpg(Imp). Typical WLTP combined: supermini 45-60 mpg; full hybrid 55-75 mpg; diesel family car 48-68 mpg; large petrol SUV 28-38 mpg. 1 mpg(Imp) = 1.609344/4.54609 km/L = 0.354006 km/L; L/100km = 282.481/mpg(Imp).
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
| Miles per Imperial Gallon (mpg (Imp)) | Liters per 100 Kilometers (L/100km) |
|---|---|
| 1 mpg (Imp) | 282.481 L/100km |
| 2 mpg (Imp) | 141.24 L/100km |
| 5 mpg (Imp) | 56.4962 L/100km |
| 10 mpg (Imp) | 28.2481 L/100km |
| 25 mpg (Imp) | 11.2992 L/100km |
| 50 mpg (Imp) | 5.64962 L/100km |
| 100 mpg (Imp) | 2.82481 L/100km |