Maybe this will help:
at 70 degrees F for both A & B
A. If I drive a lot in town (stop n go) and have the climate controls off I will typically see my EV battery show 20-25 miles in the morning after a full charge.
B. If I drive a lot on the freeway and have the climate controls off I will typically see my EV battery show 17-19 miles in the morning after a full charge.
Like a mf66 said earlier - the predicted range will depend upon your driving habits. What I notice about A above is that my post driving report will detail something like 3-6 miles from regen but when on the freeway (B) you might only get like 0.5 - 2 miles from regen (assuming you have some in town driving to get to the freeway). I believe this accounts for the differences in the 2 estimated battery ranges above. The number of miles on the EV battery after a charge appears to be a prediction the computer makes that is based upon your most recent trips.
I have noticed that my numbers remain pretty consistent (like above) until the temperature drops below 30 degrees F or so. In the fall when temps are in the 40's I can usually drive comfortably with just a heated seat & all climate control off - this allows me to make my 15 mile round trip in EV mode exclusively. Now that the temps have fallen into single and low double digits I have to run climate controls and I am now seeing ranges of about 12-14 and even then the ICE kicks in with climate control in order to produce heat.
This behavior seems to be what it is - my only wish here is that the CMAX had an EV battery that is twice its current capacity - that would allow me to remain in EV mode exclusively for just about all of my day to day driving As best I can tell the cost of electricity per mile is a lot cheaper than the cost of gasoline per mile - this includes the times I have to charge during the day at the much higher day rates for electricity...