10.02 Max Regen?

[badger4149]

I recently completed a mountainous road trip (2025 R1S Tri) which included numerous long, windy downhill descents. It became clear that the vehicle efficiency capped at 10.02 miles/kWh, no matter how long or steep the descent. I was wondering if anybody had any insight into this.

Adventure on!

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[mkhuffman]

Yes.

 

[JacobAZ]

I think it's just a limit on the display, not that regen stops, unless there is a heat issue. On the driver display efficiency, I believe the display stops at 4.0. On the energy monitor screen, I have seen it over 10, but I don't recall how much above 10.

 

[VSG]

Yes, it's limited to 10 just for display purposes. The graph itself HAS TO BE clipped at some maximum value, because the actual number can go to infinity (rolling downhill with everything off, you're dividing distance by zero to get miles per kWh).

The displayed number used to be limited to 4, just like the graph, but in an update maybe two years ago (?) they changed it to 10. While 4 was low enough that most people reached it on a regular basis, 10 seems to be high enough that it only happens a small percentage of the time
in the right conditions.

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