Fuel consumption table: L/100km to US and UK MPG chart

European and most other car specs give fuel use in liters per 100 km, where lower is better. The US and UK use miles per gallon, where higher is better, and the two countries use different gallons. This page lets you look up any common figure in all three without mixing them up. All values are computed from the exact gallon and mile.

The two constants

Because one figure is distance per fuel and the other is fuel per distance, you divide instead of multiply: MPG (US) = 235.215 ÷ L/100km and MPG (UK) = 282.481 ÷ L/100km. Why this is not a straight line is covered in MPG to L/100km: why it isn't linear.

L/100km to MPG (US and UK)

MPG (US) to L/100km and MPG (UK)

Worked example: comparing a German and a US listing

A German listing says 5.5 L/100km and a US listing for a similar car says 40 MPG. Convert the German figure: 235.215 ÷ 5.5 = 42.8 MPG (US). Or convert the US figure the other way: 235.215 ÷ 40 = 5.88 L/100km. Either way the US car looks a little better on paper. A UK buyer would see the German car as 51.4 MPG, which is why UK and US reviews of the same model print different numbers.

Before you compare: test cycles differ

The table converts units, not test methods. EU figures come from the WLTP cycle and US figures from EPA tests, and the two are run differently, so the same car can get slightly different official numbers even after conversion. Our real-world vs EPA guide explains why your own number will likely differ from both.