Why the difference in MPG estimates on window sticker between US and Canada?

Question

I bought a Pontiac Wave in Canada and the sticker showed 49 mpg which I have seen on the hwy. I just saw a Chev Aveo ad on Yahoo that claimed 34 mpg I think...can't find it now, but basically why the huge difference? Same car, 15mpg difference?

Answer 1

MPG ratings in U.S. are determined from tests that the U.S. EPA conduct. Canada does not use the U.S. EPA results to determine their MPG ratings.

Answer 2

There are less stop lights in Canadia so you use gas there.

Maybe you were looking at the Highway mileage on one and City on the other.