Convert US miles per gallon to UK imperial miles per gallon and UK MPG to US MPG. Gallon size converter.
Multiply the US MPG value by 1.20095 to get UK imperial MPG. The difference comes from the imperial gallon being about 20% larger than the US gallon.
| US MPG | UK MPG |
|---|---|
| 15 | 18.01 |
| 20 | 24.02 |
| 25 | 30.02 |
| 28.5 | 34.23 |
| 30 | 36.03 |
| 35 | 42.03 |
| 40 | 48.04 |
| 50 | 60.05 |
MPG to L/100km Converter
Convert miles per gallon to liters per 100 kilometers and L/100km to MPG.
L/100km to MPG Converter
Convert liters per 100 kilometers to miles per gallon and MPG to L/100km.
MPG to km/L Converter
Convert miles per gallon to kilometers per liter and km/L to MPG.
km/L to MPG Converter
Convert kilometers per liter to miles per gallon and MPG to km/L.
UK MPG to US MPG Converter
Convert UK miles per gallon (imperial) to US miles per gallon.
km/L to L/100km Converter
Convert kilometers per liter to liters per 100 kilometers.
The US gallon (3.78541 liters) is smaller than the UK imperial gallon (4.54609 liters). A car travels farther on one imperial gallon, so UK MPG numbers are always higher.
An imperial gallon is about 20% larger than a US gallon. Specifically, 1 US gallon = 0.832674 imperial gallons, or 1 imperial gallon = 1.20095 US gallons.
30 US MPG × 1.20095 = 36.03 UK MPG. UK figures are always about 20% higher than US figures.
The United Kingdom still commonly uses imperial miles per gallon for fuel economy, though official EU ratings were in L/100km before Brexit.