Svetlin
Member
There is no proper way to actually measure the effect of cold on your winter range that doesn't actually involve actually seeing how far you can drive on a trip that actually depletes the vast majority of your pack. These "well, it read that I was burning X Wh/mi, so I just divide the pack size by that..." things that people do tend to give highly distorted results. And to have meaningful data, one also has to do a comparison summer drive with the same speeds, configuration, etc, and when quoting their data, cite what sort of conditions (temperature, road conditions, vehicle config, driving style, etc) the measurements were made in.
Which, BTW, is what the AAA study did - went through an almost entire charge depletion in controlled circumstances, on different types of drivecycles and in varied conditions.
Fair points. To anyone looking to get a clearer picture of winter consumption, I recommend signing up for teslafi and looking at your 'temperature efficiency' over time. My daily commute is less than 5 miles one way, and I was getting terrible results (46% of rated efficiency) at 20° F. However, if I look only at drives longer than 10 miles, I get close to 70% efficiency at the same temperatures. I'm sure things would be better on an actual trip of 100 miles or more.
P.S. Unfortunately, that still wasn't enough to convince my wife that it's OK to take the Model 3 for a day trip to a ski area 90 miles away.