Preconditioning the battery for Supercharging uses a TREMENDOUS amount of energy. Do you supercharge often?
Here are two charts taken from my 2022 Model 3 Performance within the same hour. In the first chart I was driving to the Supercharger near the track and in the second chart I was heating the battery while waiting in line to drag race at the track. The line was exceptionally slow that day.
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If you live in a cold climate the. Being able to garage your car and plug in all the time is critical for maintaining a great efficiency.
I think if you precondition while plugged in that energy won’t factor into your efficiency results. That is key to getting the numbers reported in these charts to look so low.