Efficiency boost from 2025.10 update? Anyone else seeing this?

[2kwik4u]

Just did a shade over 1,200mi this weekend. Reset the trip meter leaving the house. 533mi down to KY, 533-ish back. Lots of around town/mixed use driving in between. Global average was 2.0mi/kWh for the trip. Global average over the life of the truck (just over 13k miles now) is 1.9mi/kWh. SO, not much of a change for me.

Did finally get hot enough to kick on the fans while fast charging, and the A/C compressor finally ran at full tilt pulling away. Holy balls the truck is loud when everything is trying to cool back down.

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[Hopper]

As has been briefly mentioned in this thread: https://www.rivianforums.com/forum/threads/2025-10-update-now-installing.42932/post-768782

I'm seeing a pretty substantial efficiency boost out of nowhere.
[For context, I drive ~144 miles round trip for work. Due to highway speeds driving, as well as elevation changes, and how cold it is in the morning--I start my drive in around 0500--my TYPICAL SoC usage driving in on my nATs is ~35%. Today it was 25%. GRANTED, it's 20F warmer than it has been this past winter, this morning: I was seeing my thermometer read 61F, and last week during my drive in, it was all of 45F. But there's almost no way that a 40% improvement on efficiency is ONLY due to the weather, in my experience. Further, I typically see ~1.5-1.8 mi/kWh on the nATs at highway speeds. This morning I was well over 2.0 the entire trip. I don't recall, even on the warmest weather days, ever seeing that kind of highway efficiency with my nATs.]


I'm simply posting this to see if anyone else is having the same experience. Has 2025.10 made any considerable differences in your mi/kWh or your overall SoC usage for your typically driving?

If this isn't an anomaly for those of us seeing it, this is pretty incredible. Hopefully this isn't an isolated experience!

Discuss!

Please

 

[Bar_Down]

To be clear.
I have had my truck for over 2 years.
I know it pretty well.

40% improvement in efficiency is absolutely not just due to the modest temperature adjustment.
ESPECIALLY when you figure my battery temps are typically in the 'comfort zone' as my truck is parked in a heated garage.

Thanks for playing!

I thought it must have been the weather, but I don’t recall the same % improvement last spring. Happy to see it whatever the reason.

 

[Engineer]

these pics were taken at the same time. I’m not sure either are right but who knows.

 

[Singletracker]

I’m still trying to figure why on earth anybody attaches any relevance to the driver’s display efficiency graph. It is not a reliable indicator of any longer distance driving efficiency. It’s a snapshot in time, only. Mine regularly goes up to 4 m/kWh. In the grand scheme of things, it doesn’t mean a darn thing. I honestly don’t know why it is even there.

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