I'm almost empty on my first tank of gas. Averaging 45 mpg both Hwy and City. The highest I saw was 45.4 average. Not quite the 47 that I had planned on. I hope it improves with time. I'm driving the best I can to get the best MPG I can.
People have to realize that the higher the rated mpg, the larger the perceived difference in actual mpg. 45.4 is only 3% less than the 47 rated. It's the same as saying, my car was rated at 25 mpg but I'm only getting 24.15 mpg, I'm very disappointed. Same percentage difference. Mileage on a vehicle is affected by so many things, not everyone keeps them in perspective. Extreme hot or cold weather, speed, acceleration, elevation, accessory use, etc. Elevation can be a big one that people don't think about. I was getting a lot better mileage going to work than I was coming home. I found out I go from 1,000 feet at home to 600 feet at work over 27 miles. I never would have guessed there was that much of an elevation change because it's not perceptible over that many miles because it's gradual. I'm getting 45.5 lifetime at 4,200 miles including winter months in Michigan. Now that the weather has warmed up I'm averaging 47 mpg or more on every tank with regular 55-56 mpg on my trip into work (again downhill and better morning temps). I'm new to this forum but I've been on http://fordcmaxhybridforum.com/ for a while. There are numerous tips on there from users getting great mileage that I've used to improve mine.