Well,...Have not seen the EPA numbers yet - though with all the vehicles arriving in the US - that cannot last for much longer. I expect the gas mileage to be frankly awful - 14 is what I am hearing from many sources. The EU and other areas do not use the US equivalent gallon size as the US - so cant use that as a guide.
You CAN use that as a guide. Just have to use some maths.
Convert imperial gallons to US gallons.