UnitConUK MPG to US MPG Converter
Convert UK miles per gallon to US miles per gallon when comparing fuel economy figures from British and American car reviews or specifications. UK mpg figures are always higher because the imperial gallon is larger than the US gallon.
Formula
Multiply UK mpg by 0.832674 to get US mpg. To reverse, divide US mpg by 0.832674 to get UK mpg.
Quick reference
| Miles per Gallon (UK) (UK mpg) | Miles per Gallon (US) (US mpg) |
|---|---|
| 30 | 24.98023 |
| 35 | 29.1436 |
| 40 | 33.30697 |
| 45 | 37.47034 |
| 50 | 41.63371 |
| 55 | 45.79708 |
| 60 | 49.96045 |
| 65 | 54.12382 |
| 70 | 58.28719 |
| 80 | 66.61393 |
About these units
Miles per Gallon (UK)
The UK mpg uses the imperial gallon (4.54609 L), standardized in 1824. Fuel economy in the UK has been expressed in miles per imperial gallon since the automobile era, though official EU tests now use L/100km.
Miles per Gallon (US)
The US mpg uses the US gallon (3.78541 L), about 20% smaller than the imperial gallon. US EPA fuel economy ratings appear on all new vehicle window stickers sold in the United States.