9mo efficiency check-in on the 2025 Gen 2 Dual Large - TL;DR surprisingly bad

[carsly]

You're telling us you were getting 4+ miles per kWh in a Cybertruck? Baloney. I had a Model S for 30,000 miles and averaged about 4 mi/kWh and it is WAY more efficient than a Cybertruck. The Dirty Tesla YT channel had a Cybertruck and he reported about 2 mi/kWh for a long road trip early on. In my 2025 Rivian dual max pack R1S I am averaging 2.68 (not including non-driving kWh) for about 5,000 miles including mountain driving.

Cybertruck has a 123kwh battery, that’s 3 mi/kWh running down I-95. I shared a video with the trip data.

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[carsly]

Others have already said this in pieces ... Just putting it all together. This summer something happened on an update which added a lot of KWH to stored trip data making calculations way off. In my case about 8,000 kwh used were added overnight. It was a onetime event. The trip meters must be reset to remove the error. Second point is Tesla and Rivian do not track KWh on trip meters the same. Tesla is only using KWH while actually driving the vehicle. With Rivian when driving to a destination the calculations are good. But when no trip destination is entered Rivian appears to be adding up all the KWh used, including when parked, to the trip meters. Bottom line, unlike Tesla, if you just leave a trip meter run forever the milage will be correct, but the KWh will include the phantom as well, so efficiency will calculate low. To get a good efficiency reading track reset meter and track individual trips. For me I average around 2.75 miles per kwh in mixed driving (Dual, large, 22" sport). Note to OP, the gen 2 in all purpose mode is always 4wd.

I reset trip B yesterday. keeping trip A as my lifetime data, erroneous or not. Maybe Rivian corrects it one day.

 

[an-thu-knee]

I can almost guarantee that is NOT your efficiency and this is a misleading video. What's likely happening is this owner has a lot of vampire drain. Several nights of not charging, several days of the car sitting idle slowing losing charge, etc. This will negatively affect the "efficiency" in that KPI, even though your actual driving efficiency is much better. Charge your battery every night and make sure your 12V is in good health and you won't see numbers like this on the display.

 

[SeaGeo]

I reset trip B yesterday. keeping trip A as my lifetime data, erroneous or not. Maybe Rivian corrects it one day.

They won't. They didn't last time they screwed up trip meter data on Gen1. If they were to fix it, they would have known 2025.26. it's annoying.

 

[carsly]

I can almost guarantee that is NOT your efficiency and this is a misleading video. What's likely happening is this owner has a lot of vampire drain. Several nights of not charging, several days of the car sitting idle slowing losing charge, etc. This will negatively affect the "efficiency" in that KPI, even though your actual driving efficiency is much better. Charge your battery every night and make sure your 12V is in good health and you won't see numbers like this on the display.

nothing misleading about it, it’s what the vehicle is displaying. no towing, plugged in most nights. I do agree something is amiss, but the data it is displaying is what it is. Why it’s consuming that much juice is the question.

Admittedly, the software is beautiful but buggy as heck. I suspect some systems/subsystems are not turning off. Not sure how I could go about figuring out and resolving this if it is indeed the case.

 

[Popobawa]

So I have both Rivian and cybertruck- beast with cyber wheels Traded 24 R1S dual motor performance all terrain for 26 quad R1S launch edt 22 inch bronze.
All calculated with miles, energy used and charging.
24 Rivian DM Perf Max abt 12k miles 2.1 miles/kwh
24 CyberBeast abt 10k miles - 2.35 miles/Kwh
26 Rivian R1S quad abt 1200 miles 1.9 miles/kwh
Enjoying both. Thanks.

 

[ENVErider]

Cybertruck is similar size, weight, use cases, drivers, terrain, and identical environmental conditions - I don't own another Gen 2 Dual Large Rivian so it's as close as I have to a point of reference with all else being roughly equal. Trends should be similar, I get the exact numbers will differ due to different vehicles with different motors, batteries, aero, tires (Cybertruck is on all-terrains). That's why i posted here to hopefully get some additional data and insight since this feels aberrant.

I have the same build (Gen 1 quad with AT wheels), reportedly the worst efficiency in the R1 lineup, and get the same numbers (over 2mi/kWhr) that user @VSG reported. I'm not sure what is going on in your situation, but it definitely warrants watching. The only thing that stands out is your low usage: 3K miles in 9 months is 1/3 or 1/4 of the usage I'm doing, and it's lower than the average user. I don't know if Tesla's calculator includes standby losses, but I know that Rivian does, and having it spend more time idle, especially with the gear guard on, is going to drive your total efficiency down.
As for the video, it's entirely your right to post whatever opinion you have, but statements like rivian efficiency is worst than the Hummer EV doesn't age well or lend credibility when every other reviewer, including several videos by Out Of Spec, show the R1's have much better efficiency than the Hummer EV, in fact the teh Gen 2 is known for good efficiency when you only compare it to similar size, weight. For your sake, I hope this 1.47 is a software calculation issue and not its actual performance. It might be worth doing 1-3 month manual check on a spreadsheet where you tally up all your kW-hrs including home trickle charging against your odomoter, basically hand calcing this to see if you get the same as shown on the screen. If you get the same number, I'd schedule a service visit to make sure it's working properly and going to sleep properly when it's supposed to.

 

[R1Skol]

I can 100% confirm rivian does not account for miles driven only. I Just drove 10 miles while using 30kw of climate control for an impressive 0.3 kWh efficiency. My guess is between the gen2 camera upgrades and heat pump zeros out any sort of increased efficiency one could expect.

 

[SeaGeo]

Admittedly, the software is beautiful but buggy as heck. I suspect some systems/subsystems are not turning off. Not sure how I could go about figuring out and resolving this if it is indeed the case.

Unless it's continuing to happen on the reset trip meter, I guarantee this was from the bug on .22.

If you are curious about the actual driving efficiency of the vehicle, check the energy app for your current drive. As other have noted, the trip meter includes energy when parked.

That being said, my dual motor max pack R1S on 20s averages 2.6 mi/kwh per the trip meter.

 

[SeaGeo]

I can 100% confirm rivian does not account for miles driven only. I Just drove 10 miles while using 30kw of climate control for an impressive 0.3 kWh efficiency. My guess is between the gen2 camera upgrades and heat pump zeros out any sort of increased efficiency one could expect.

Did you precondition it for a long time prior to driving?

 

[R1Skol]

Did you precondition it for a long time prior to driving?

I ran climate control for 4 hrs

 

[OC12020]

One of the software updates messed up the calculation for efficiency. When the next update came out, that bug was fixed, but the old data and calculation remained. You should reset Trip A and B and follow that for a while as your effiicency should be more accurate at this point.

Thanks for posting. I’ve seen the same thing and was wondering if they messed up the calculations along the way.

 

[Largo72]

2025 R1T Large with 22 Sport Brights - Just under 12 months, my lifetime average over 10,058 miles is 2.34mi/kWh with a wide range of trip types including local workday commutes, long trips up and down the state and some towing, including a 230mile round trip pulling our 22' boat down to Islamorada and back. I've been very pleased with the efficiency, except while towing of course!

 

[carsly]

2025 R1T Large with 22 Sport Brights - Just under 12 months, my lifetime average over 10,058 miles is 2.34mi/kWh with a wide range of trip types including local workday commutes, long trips up and down the state and some towing, including a 230mile round trip pulling our 22' boat down to Islamorada and back. I've been very pleased with the efficiency, except while towing of course!

Thanks for sharing. Even with topping off my tire pressures and a couple longer trips since I reset Trip B I'm barely at 2 mi/kwh. At some point I'll schedule in for service on the headlight recall and ask them to take a look and see if they can figure anything out. I have horrendous wind noise from the A pillars at highway speeds but most of my mileage is at town speeds so doubt that has any impact.

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