The "kWh Used" number is an estimate, not a meter reading, because it’s actually a net calculation = grid power consumed less regen put back in. The system accounts for variation in the amount of regen during a trip by subtracting it from the kWh Used number on the display (you can sometimes see the number get smaller because of regen as you drive down a long hill), so you, in effect, get to use it again. Since the amount of grid power is consistent from full charge to full charge, the more hills you drove down and the more braking you did, the higher the total power consumed would be if the "kWh used" number was the sum of the grid power used and the regen you got during the trip instead of the difference. By eliminating regen count from the total trip kWh Used, you get a fairly consistent kWh Used number for every fully depleted battery use.Less regen maybe? It's more about what's left on the battery than what's been used, so if you're not braking as much that's one possibility.
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