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Made my usual trip to Austin and back in my S60 a few days before the update, then repeated the trip yesterday post-update. Same driving conditions, route, speed, and even ambient temp (within 5 degrees or so), averaging around 355 Wh/mi. Had 25 mi excess range after the update. A very noticeable improvement. Amazing that my S60 just keeps getting better with age
The release notes say that the motor is de-energized at standstill. There is nothing about better cruising or better motor efficiency while driving. Only when you stand on a red light the motor won't use any energy. Since the motor never used much energy there anyways and the trip meter doesn't count energy usage at standstill I highly doubt there is such a significant difference now and it wouldn't show on the trip meter's energy usage. They did say the AC is now more efficient. But that only contributed maybe 5-10% of the energy usage. So even if they could improve AC efficiency by 1/3 (which would be amazing) it would only be 1/3 of 5-10% meaning it would overall only make 2-3% difference. Much smaller than reported here.