I have now 3100 miles. Mpg is frozen at 38.2. It never got lower then 38.1 and higher then 38.5. The fuel in the tank measurement gave about 38mpg. My opinion that 47 mpg is not about this car. The car to car MPG dispersion is dependful more from car factory tuneup then driving style. The driving style have to be recomended by the car developer. I'm not sure that the pulsing style is the best for powertrain and transmission. A driver have to be at destination in time and drive safely. The fuel economy is the 3rd priority. Overall I'm happy with my Ford C-Max. But I'm not sure that if I'd know that 47mpg is a fiction I'd take a risk to buy the new on the market car.