Convert Kilometers per US Gallon to Miles per Imperial Gallon
Convert Kilometers per US Gallon (km/US gal) to Miles per Imperial Gallon (mpg (Imp)) instantly and accurately.
Conversion Formula
mpg (Imp) = km/US gal × 1.340059203
About Kilometers per US Gallon
Kilometers per US gallon (km/US gal) appears in regions where metric road distances coexist with US gallon fuel pricing - the US-Mexico border zone, parts of Latin America, and the Caribbean. 1 km/US gal = 1/3.785411784 km/L = 0.264172 km/L. A typical car at 12.75 km/L = 48.3 km/US gal; a scooter at 35 km/L = 132 km/US gal. Mexican Federal District fleet databases and Central American logistics records use this unit when US gallon fuel costs are referenced in kilometre-based route planning. 1 km/US gal = 0.264172 km/L.
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).
Quick Reference Table
| Kilometers per US Gallon (km/US gal) | Miles per Imperial Gallon (mpg (Imp)) |
|---|---|
| 1 km/US gal | 0.746236 mpg (Imp) |
| 2 km/US gal | 1.49247 mpg (Imp) |
| 5 km/US gal | 3.73118 mpg (Imp) |
| 10 km/US gal | 7.46236 mpg (Imp) |
| 25 km/US gal | 18.6559 mpg (Imp) |
| 50 km/US gal | 37.3118 mpg (Imp) |
| 100 km/US gal | 74.6236 mpg (Imp) |