Yeah, that's basically it. I'm not sure how "far back" the GOM's algorithm goes to figure out what the average Wh/mile is but it basically takes your last X number of minutes (where "X" is unknown) of driving and considers the non-HVAC power consumption vs. the HVAC power consumption and comes up with some estimate. It will morph as your driving changes.Carbuff wrote:So, I have seen how the gom dips 15 miles or so when I use the heat and returns to normal when I shut it off. I usually use heat for short bursts for defogging windows, etc. Usually it reads anywhere from 65-70 when fully charged due to my usual driving habits. When I lend the car to my daughter to drive her 30 mile, each way, trip to work and back, it will be at 80+ when fully charged the next day. Her trip is mostly 45 mph all the way with light traffic. Yesterday was a terrible rainy day in the 50s. My wife and I drove all over running errands, going to lots of stores. We had the heat on most of the time, lights, wipers, heated seats, etc. We probably put 40 miles on the car and the gom said 18 when I shut it down for the day. I was ok with that considering the liberal usage of the heat and poor driving habits. So, this morning with the car fully charged at 100% it says 46 miles. Is this because the car now assumes that I will be driving like I did yesterday? Will this go back to normal once I start driving my usual way? Is it possible that the gom will actually start adding miles once I start driving around normally? I will post back with my results but am interested in others experience with the gom "over-reacting"