Here is the promised update.
overnight temps are in the high 50's
I shut off the heater
I now get 83-85 miles per charge
Starting to play with not running the lights [during the day!] and trying the E+ setting.
Will experiment with the D- regenerative charging, but so far this does not seem to...
I have my first service today
will update everyone on what I find.
to answer the questions, tires are fine, yes it has been cool, around 40d
cabin temp set at 75
although the defroster works great for heating the cabin, then I shut it off
my car is 3.5 months old. the range has dropped from 80miles to about 65 on a charge. It seems to happen right away and continue thru the whole charge.
It has been cool but not all that cold, around 50degrees in the AM, 60s in the afternoon. Adding the miles driven to the remainder was only...