Remember, we are dealing with a US gallon here and across the pond its Imperial gallons.
So their gallon is 1.2095 US gallins or 21% more.
If they claim they are getting 35mpg thats really only 27mpg. If they claim 44mpg that is really about 34mpg. If they claim they are getting 50mpg thats really 39mpg. Ect.
Chris
I guess that is some of it but i think they still get MPG's but there gas is twice as much.