This Windows problem has been made 2 times by 2015 model year owners.
C-Max Energi Generations
The C-Max Energi has 1 generations. Generations are groups of model years where the vehicles are continuously produced, using similar engineering and shared features. Generation data isn't always cut-and-dry and is often different for different countries. When in doubt, we use North American generation data.
Ford has to revise the fuel ratings on six of its popular cars, and not in a good way. The company says they over-estimated the fuel efficiency on these cars and then reported those inflated numbers to the EPA. And now they've been caught.