I have a C-Max Energi and it sounds to me that you folks have just the hybrid one. Because I get 70+ mpg most if not all the time. I went over 1000 miles on my last tank of gas and got 84.5 MPG. What makes that possible is that about 60% of the miles are on electric mode. Just the other day I had 4 miles on the electric range. My trip took me 7.6 miles and the electric lasted the whole way. Coming back it is a slight up hill trip, but with a fully depleted battery I still got 3.2 miles on electric. This car amazes me more and more. When I calculated the savings that this car would bring I have been surprised that the savings have been about $10 more dollars each month than I thought.