40 MPG (US) to MPG (UK)
Result
40 mpg = 48.0381 mpg (imp)
40 mpg = 48.0381 mpg (imp)
How to Convert miles per gallon (US) to miles per gallon (UK)
Fuel consumption units can be converted using a conversion factor:
Reverse: 48.0381 miles per gallon (UK) = 40 miles per gallon (US)
Reverse: 48.0381 miles per gallon (UK) = 40 miles per gallon (US)
miles per gallon (UK) to miles per gallon (US) converterAbout These Units
miles per gallon (US) (mpg)
Miles Per Gallon (US) is the standard efficiency metric in the United States. It measures how far a vehicle can travel on one US gallon of fuel. The Corporate Average Fuel Economy (CAFE) standards use this unit to regulate automakers. Higher is better.
A Toyota Prius gets about 50 MPG (US).
Commonly used in: US Car window stickers, EPA ratings, US auto reviews, Fuel economy tracking apps.
miles per gallon (UK) (mpg (imp))
The UK also uses Miles Per Gallon, but based on the Imperial Gallon, which is 20% larger than the US gallon. This means UK MPG figures are always higher than US figures for the exact same car. This is a frequent source of confusion in online car forums.
A diesel hatchback in the UK might get 60-70 MPG (UK).
Commonly used in: UK Car specs, Top Gear / Grand Tour, British auto magazines.