Ford, it seems, has been hedging backward on fuel economy numbers for the C-Max ever since, two years ago when it came out with 47-mpg city and highway ratings, most owners weren't seeing anything close to that.
Last year, Ford voluntarily cut those ratings to 43 mpg city, 43 highway, and is making payments to the owners of 2013 C-Max models to help make up for the discrepancy. Then later in the 2014 model year Ford made a further cut to the numbers -- to 42/37 mpg for the hybrid and 38 mpg for the Energi -- due to a series of blunders in the way Ford calculates the numbers.
Those new numbers, by the way, much more closely correlate to what we've seen in test drives all along: very low 40s in most normal types of city and suburban driving, falling to mid- to upper-30s on higher-speed highway runs.
Ford also cut the estimated range of its C-Max Energi model from 21 miles to 19 miles.
In both models, you get a special Eco Coach set of displays, oriented toward helping you understand the power flow of the powertrain and optimizing your use of charging, and of the system's all-electric mode.