petrol (gas) is sold in litres but most people work out fuel use using MPG and we still use miles as a unit of distance.
But I bet when you figure your miles per gallon, you get a totally different number than you'll get in the US.

Because I'm guessing you are using the Imperial Gallon to calculate that mpg, which is about 20% larger than a US gallon.

And getting 4 pints of milk in the US would only equal 1.9 Liters!

Remember all of this when you go to the tavern and order yourself a pint!