One the Window Sticker showing shows EPA testing has occured and that is what the EPA says unless we see a close up of the sticker that says otherwise. Two Mexico is on the Metric System not US Standard System as Marc pointed out. Unless one of us can see video of the speech and speak fluent Spanish. Third and foremost, automagazines who got higher figures than 40mpg were probably driving at highly conservative speeds of 60 mph and below. I can almost squeeze 40 mpg out of my ST Focus if I drive 55 mph, and more if you go slower. Fourth on the matter of the EPA's mileage figures the insterstate national average is now 75 mph so figure doing roughly the national average you're going to lose fuel mileage since modern day cars are most fuel efficient at 65/70 mph once above that fuel mileage begins to drop. Also the grade of gasoline used is another determining factor, using an E10 blend of fuel will cause a drop in fuel mileage as well. These are determinate factors the EPA uses in figuring up their fuel milage and usually they put a small disclaimer under the mileage that it will vary to as little as say 35 mpg to 45 mpg on the interstate highways. The EPA does extensive fuel milage testing in all conditions of clear days, windy days, rainy days, and snowy days. So I would say what the window sticker says will most like be the average we'll see. Some of us will get higher, some of us will get lower.