I assume EV energy is all energy supplied by the battery to propel the car and thus would include all sources of energy to charge the battery. The regen score only applies to when one depresses the foot brake and is used as a tool to help one to not use the friction brakes. Braking to me simply means that the front wheels have a force applied to them and are slowing down via regeneration and/or friction. The ABS / stability control algorithms know what is going on and there would be no reason that the rear brakes couldn't be applied anytime. The ABS can do proportional braking
Wiki says: "When braking or decelerating, the Fusion's hybrid system uses regenerative braking, where the electric drive motor becomes a generator, converting the vehicle's momentum back to electricity for storage in the batteries." I've always seen discussion on "regenerative braking" to include coasting (decelerating). Braking does not mean that one has to brake via friction brakes. So, that's why I assume regen miles is all energy (converted to miles) generated by braking the front wheels.
The inverter / battery is capable of 35 kW of sustained charge. I would think that would then be the maximum braking force that MG2 (traction motor) would apply during regen. The question then: is 35 kW of braking force to much force to put on the front wheels while the rear end is free wheeling. I don't know but have a feeling that the rear friction brakes may be used in assisting slow down (the rotors seem to be wearing). Then, the question is does application of the rear friction brakes affect brake score?
Edit: here's the definition of regenerative braking in the owner's manual:
Regenerative Braking System
This feature is used to simulate the engine braking of an internal
combustion engine and assist the standard brake system while recovering
some of the energy of motion and storing it in the battery to improve
Edited by Plus 3 Golfer, 05 May 2014 - 06:49 PM.