The 2025 Rivian R1S Large pack is...uh...not so Large (or efficient)

[HaveBlue]

Don't underestimate how much the heating and cooling affect efficiency. Try turning it off to remove that as a variable. I think you'll find a big difference.

Also the LFP pack has to be calibrated to 100% occasionally due to the flat voltage curve.

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[Goose]

Also the LFP pack has to be calibrated to 100% occasionally due to the flat voltage curve.

OP has the Large pack, which is NMC. Only the Standard battery pack is LFP.

 

[carsly]

The wind noise is a pretty common issue. Lots of wind noise mitigation threads including my own here https://www.rivianforums.com/forum/...e-thread-what-has-worked-so-far-for-me.43009/.

I would start with doing a window calibration first on all your windows. My wind noise was moderate up to about 75 mph of airspeed and then the buffeting was so bad it has made me start to hate my truck and consider selling it.

Tires can definitely take time to break in.

Thanks for the wind noise tips. It's really bad. Window calibration seems like a great place to start. Hopefully that should do it.

BTW, I also have a Cybertruck AWD and you're right - even with frameless windows it has substantially less wind noise at all speeds than the Rivian with framed windows. Not even sure how that's possible.

 

[carsly]

One thing I will mention is during my first month of ownership my efficiency was trash and it took a while to get anywhere close to EPA ratings despite being in warm weather. I believe the Pirellis actually have a break-in period with high rolling resistance until they wear a bit. Second was that on delivery my truck had an issue where the rear motor was always engaged no matter the mode. A month later it got fixed and were I was getting 1.8 and 1.9 where I now get 2.5.

Good to know, thanks. My rear is definitely disengaged most of the time, seems to at ambient temps. Only kicks in when accelerating from a dead stop it seems.

Will try to get some more miles on the tires, at about 800 so far with no real highway miles. Have a 100 mile round trip, 90% highway speeds, coming up on Sunday so will report back. Have probably done this trip 8-10 times in the last year and it typically chews up 17-18% of my Cybertruck battery (35% +/- 1% in these conditions) so interested to see how the "Large" pack fares. Yes, bigger battery battery on the Cybertruck, but that's also running 35" all terrains which do me no favors at highway speeds.

 

[narmstrong79]

This is why I ended up going max on mine... The large of Gen 1 is FAR more capacity than large Gen 2

Large Gen 2 - 109 kWh
Large Gen 1 - 131 kWh
Max (both gens) - 141 kWh

yes Rivian shrunk the large to reduce cost and justify the max price. Both have lower cost cells than gen 1 also. Gen 1 max was a rip off at the time.

Capacity shouldn't matter to the consumer, efficiency and ultimately range, is is what should be important. They made a huge change in their efficiency # to hit the range targets, although they might be gaming the EPA test a little bit harder with gen 2 is my guess.

I was very happy to get a Standard+ Gen 1, a SW locked Large to 121kwh and 300 mile range with 22's, while that was available

 

[narmstrong79]

Yes and no. Tri and quad are new in house motors. The Dual motor has always been enduro. It was only G1 quad that had bosch

Correct, the Gen 1 dual was the start of Enduro Gen 1 quad never got this motor.

 

[DayTripping]

I think the sweet spot for most people might be what a friend got, G1 dual large. You have almost the size of the max pack and the enduro motors (if that is your thing). I am perfectly happy with the range of my G1 quad large.

 

[Goose]

Capacity shouldn't matter to the consumer, efficiency and ultimately range

These are trucks, capacity is important to the buying demographic that use them as trucks. Many of us tow boats, utility trailers, and toy haulers.

 

[narmstrong79]

These are trucks, capacity is important to the buying demographic that use them as trucks. Many of us tow boats, utility trailers, and toy haulers.

Sorry Goose, I got to disagree.. if capacity was important, automakers would market and publish that more often. It's all about range, no one speaks about capacity...except maybe us dorks who go on forums.

You could have something crazy like the hummer at ~215 kwh and 300 miles of range or my R1S with 121kwh and 300 miles ... or a SilveradoEV with the same ~215kwh and 450mile vs and R1T at 140kwh and 420 people aren't looking at the range, not the capacity and they aren't doing the cost calculations of how much more expensive and super large battery is to operate than the smaller one. Same way people are really doing the math on MPGs... people buy what they like and what has the range # they are comfortable with.

While, I don't think any EV truck should be used for hauling trailers such for long distances that need 1 or more charges is done often. Just get a Diesel at that point, I do think EV trucks should publish their range "at full capacity range" to better educate the potential buyer. But Gas cars never had to publish their MPG drop at full load, so you wont see that on EVs.

 

[Goose]

Sorry Goose, I got to disagree.. if capacity was important, automakers would market and publish that more often. It's all about range, no one speaks about capacity...except maybe us dorks who go on forums.

You could have something crazy like the hummer at ~215 kwh and 300 miles of range or my R1S with 121kwh and 300 miles ... or a SilveradoEV with the same ~215kwh and 450mile vs and R1T at 140kwh and 420 people aren't looking at the range, not the capacity and they aren't doing the cost calculations of how much more expensive and super large battery is to operate than the smaller one. Same way people are really doing the math on MPGs... people buy what they like and what has the range # they are comfortable with.

While, I don't think any EV truck should be used for hauling trailers such for long distances that need 1 or more charges is done often. Just get a Diesel at that point, I do think EV trucks should publish their range "at full capacity range" to better educate the potential buyer. But Gas cars never had to publish their MPG drop at full load, so you wont see that on EVs.

I completely understand your point and your argument is valid. I honestly feel like the EV range calculation is a complete waste. Instead, manufactures should post a city and highway mi/kWh and be forced to display the usable battery pack size.

The problem with EV towing is the range impact is so variable from wind, temp, and aero. Fuel vehicles aren’t as affected.

 

[carsly]

I completely understand your point and your argument is valid. I honestly feel like the EV range calculation is a complete waste. Instead, manufactures should post a city and highway mi/kWh and be forced to display the usable battery pack size.

The problem with EV towing is the range impact is so variable from wind, temp, and aero. Fuel vehicles aren’t as affected.

Fuel vehicle ARE effected by the same variables, but they have soooo much more stored energy onboard in gasoline/diesel and are soooo much more inefficient that the same factors get lost in rounding.

But if you're driving a gasser pickup you might see 20+ mpg highway but have that cut to 8-10mpg when towing, at speed, through some mountains. So your range still drops in half, just as it does with an EV, but you can refill in 8 mins so don't consider the increased inefficiency.

I do think Rivian opted to intentionally mislead labelling the Gen 1 and Gen 2 packs as both "Large" while knowing they have very different capacities and that Gen 2 wasn't 20+% more efficient to make up for the 20+% reduction in pack size.

The Gen 2 batteries should have been Standard, Medium and Max. Effectively the Large pack has been eliminated.

 

[carsly]

I was very happy to get a Standard+ Gen 1, a SW locked Large to 121kwh and 300 mile range with 22's, while that was available

THAT's a winning hand. Well played!

 

[Goose]

Fuel vehicle ARE effected by the same variables, but they have soooo much more stored energy onboard in gasoline/diesel and are soooo much more inefficient that the same factors get lost in rounding.

But if you're driving a gasser pickup you might see 20+ mpg highway but have that cut to 8-10mpg when towing, at speed, through some mountains. So your range still drops in half, just as it does with an EV, but you can refill in 8 mins so don't consider the increased inefficiency.

I do think Rivian opted to intentionally mislead labelling the Gen 1 and Gen 2 packs as both "Large" while knowing they have very different capacities and that Gen 2 wasn't 20+% more efficient to make up for the 20+% reduction in pack size.

The Gen 2 batteries should have been Standard, Medium and Max. Effectively the Large pack has been eliminated.

Right, that’s why I said “not as effected” (affect and effect still trips me up). My 24 Sequoia with A/T (E load KO3’s) tires gets 17mpg highway, I get 13mpg towing my boat. I get that same economy in every season, regardless of temp.

Oh 100% Rivian marketing created confusion with the Gen 1 to Gen 2 large pack switch.

 

[narmstrong79]

THAT's a winning hand. Well played!

Yes, I'm very happy with my decision vs Gen 2 "large"

 

[clostridium]

Interesting. Most of the anecdotal information I've seen indicates 2.4(ish)mi/kWh is pretty much the all around consumption for the R1S with 22's.

To be clear I’m seeing overall 2.4 like you reference. The scenario the OP is discussing though is in many ways nearly ideal for rivian efficiency due to lower speeds and fairly temperate conditions with dry roads.

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