New R1S Dual Performance Max AT Range issues

[LiamJacobs]

Just picked up my R1S Dual Performance Max AT on Monday. I was visiting family when I picked it up, and drove home approximately 800 miles today. Rated miles is 370, so I planned to stop twice, after 280 miles for the first leg, and 245 miles for the next 2 legs. I unfortunately got it on the charger late last night and only had 83% when I left. Had to stop short of my first stop. No problem. Continuing to the original first stop, I charged all the way up to 85% which said it would give me 330+ miles of range. My next stop was exactly 248 miles, I drove at mostly 75ish mph, hit 0% and 0 miles, 7 miles before my scheduled stop. Coasted in on reduced performance. So 85% only got me 241 miles. WTF? That’s like a 90 mile shortage. Next leg was 244 miles, I charged to 92%, car showed 344 miles remaining. Programmed home in, showed I would arrive with 47 miles. 244+47= 291 miles, but car showed 344 range, where did the miles go? So I started home. Watched the arrival estimate go down to 29 miles. When in the last town before mine, I ended the route and restarted it. Now it showed I wouldn’t make it, and needed to stop again. So it was literally over 100 miles less then expected. Wtf. Charged to 70% with 260 miles, drove 77 miles home, arrived with 164 miles. 164+77= 241, so again where did the 20ish miles go? Anyone else having issues like this? For reference it was between 70-90 the entire trip, I had the ac on at 70-72 for most of the trip. Sunny, no rain.

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[CarlM408]

EPA/"Rated" miles are simply not 75MPH on the freeway miles. Sorry if that seems misleading on Rivian's part, but the EPA test is not rocking along a highway at that speed.

The range shown on the dashboard are 'rated' miles, while if you navigate to your destination, the 'miles remaining on arrival' reported by the Nav are more literal real-world miles, and factors in things like elevation change, speed limit of the roads on your route, etc. The latter we've found to be quite dependable, the former needs to be heavily salted to taste.

 

[LiamJacobs]

I honestly could understand it being off by 10%, but 20-25% seems like bait and switch. The car this is replacing is my 2018 Volt, and I routinely get the stated mileage of 53 on electric.

 

[CharonPDX]

You will never ever ever ever get the rated range going 75+ MPH for any significant portion of the trip.


Carmakers must advertise efficiency (and therefore range) based on the results of the EPA tests. The EPA "high speed" test is *NOT* "75 MPH interstate highway nonstop" - it is average 48 MPH, top speed 80 MPH for just a few seconds, maximum sustained speed 65 MPH, with a few stops. Over 9 minutes. With air conditioning/heat OFF.

https://www.fueleconomy.gov/feg/fe_test_schedules.shtml

And the "range" rating for EVs is even worse - it's mostly based on the "city" cycle. (Then purposefully made worse because they know it's badly biased toward showing more range than it should; but obviously not enough to account for mostly high-speed highway driving.)

(City range is weighted 55%, highway 45%.)

https://www.epa.gov/greenvehicles/fuel-economy-and-ev-range-testing

 

[CharonPDX]

I honestly could understand it being off by 10%, but 20-25% seems like bait and switch. The car this is replacing is my 2018 Volt, and I routinely get the stated mileage of 53 on electric.

Volt is more aerodynamic, therefore less impacted by higher-than-test-rating speeds.

Rivians are a brick. Slowing just 5 MPH will noticeably increase your efficiency/range.

 

[CarlM408]

I honestly could understand it being off by 10%, but 20-25% seems like bait and switch. The car this is replacing is my 2018 Volt, and I routinely get the stated mileage of 53 on electric.

Some manufacturers over sell, some under, in the grand scheme of things Rivian ranks as pretty accurate: https://www.consumerreports.org/car...ts-models-that-beat-epa-estimates-a1103288135

"My next stop was exactly 248 miles, I drove at mostly 75ish mph, hit 0% and 0 miles, 7 miles before my scheduled stop."

Why do this to yourself? The Navigation must have been yelling at you that you didn't have the range to arrive, why keep pushing along at 75 in spite of the warnings? Slow down a bit and maintain whatever range safety buffer you're comfortable with, but don't drive it negative and then wonder WTF. Speed absolutely kills range (e.g. drag goes up exponentially with speed).

 

[Dark-Fx]

Rivian doesn't adjust the number on the driver's display below the EPA rating, but the expected remaining range shown in navigation at arrival is based on your trip. You just have to remember, though, that the range stated that will be remaining is still based off the EPA number, and not historical use like the Volt.

Also, welcome to your first full EV. There is no backup generator on board so you probably should get used to leaving more than zero miles remaining before charging...

 

[Davethadog]

EVs suck for roadtrips. It’s not any less expensive but it is more frustrating and time consuming, that’s just the nature of the tech at the moment. The range estimates Rivian gives are of mixed city and highway driving which is how most makers do it. I find this method stupid though because you only care about range on a road trip in which circumstance you’ll never come anywhere close if you’re trying to drive at normal highway speeds. Sorry you had to learn this lesson on a new fairly expensive vehicle.

On the bright side, drag increases exponentially with velocity so slowing down a little will gain you some range back, still pretty annoying when you’re trying to make it through Wyoming or wherever.

 

[Mathme]

There’s a reason why we call the miles next to battery % a guess-o-meter. Never rely on that. If you want to know a closer destination mileage enter your stops one at a time to your next destination.

for example. Driving from Sacramento to lake Tahoe with 85% charge on the guess-o-meter says 240ish miles (quad AT 20s here). Enter a Lake Tahoe address in the GPS and it’ll say you’ll arrive with about 85 miles of range. Note that over those 100 miles you’ll climb about 9,000 feet of elevation.

Another way to look at it is my Rivian on a full charge holds about the equivalent energy of about 3.5 gallons of gas. How far can you really go without prior planning?

 

[LiamJacobs]

Some manufacturers over sell, some under, in the grand scheme of things Rivian ranks as pretty accurate: https://www.consumerreports.org/car...ts-models-that-beat-epa-estimates-a1103288135

"My next stop was exactly 248 miles, I drove at mostly 75ish mph, hit 0% and 0 miles, 7 miles before my scheduled stop."

Why do this to yourself? The Navigation must have been yelling at you that you didn't have the range to arrive, why keep pushing along at 75 in spite of the warnings? Slow down a bit and maintain whatever range safety buffer you're comfortable with, but don't drive it negative and then wonder WTF. Speed kills range (e.g. drag goes up exponentially with speed).

I was also using ABRP, which was saying I would make it, it was wrong.

 

[sirna7]

I honestly could understand it being off by 10%, but 20-25% seems like bait and switch. The car this is replacing is my 2018 Volt, and I routinely get the stated mileage of 53 on electric.

Road trip efficiency is typically around 66.6%, so for a stated range of 370 miles, this equates to approximately 246 miles from 0 to 100%.

Ideally, the longest stretch you could expect is ~200 miles.

Your average distance between charges would be around ~140 miles.

Problem solved!

 

[Goose]

You were going 75-90mph? I don’t even have an EV and know that’s going to be horrible for range. What was your efficiency, mi/kwh?

 

[Electrified Outdoors]

EPA numbers compare poorly to the real world in many cases. What I would suggest is using your efficiency as a guage as to how far you can go. Things like elevation change, speed, weather, etc. all affect range.

the way this works is to reset one of your trip meters. If your getting 2.0 mi per kwh and you have the max pack (approximately 142 kwh usable when new) then you know that's about 280 mi of range 100% to 0%. Ideally, your not charging above 80% on a road trip (very slow) or running it below 10% (not good for battery health) so let's say 70% is what you will use after the initial charge for the road trip.

So you have about 100 kwh usable between stops. If your getting 2 mi per kwh multiply that by 100 and you have 200 miles of range between stops. If your getting 2.3 same thing about 230 miles.

The term "your mileage may vary" is applicable for road trips like these.

If you want to plan ahead you can use ABRP or the Rivian App route planner. With the ABRP premium plan you can use real time weather instead of seasonal. You can even pull live data from the truck.

 

[Hereforthesnacks]

It really depends on the car. Rivian is actually pretty decent at 75mph range. Others are worse. Some are a little better — the EV9 is rated at 270 and will get you 240 at 75mph.

Rivian simply wasn’t designed to be aerodynamic.

 

[Supratachophobia]

Just picked up my R1S Dual Performance Max AT on Monday. I was visiting family when I picked it up, and drove home approximately 800 miles today. Rated miles is 370, so I planned to stop twice, after 280 miles for the first leg, and 245 miles for the next 2 legs. I unfortunately got it on the charger late last night and only had 83% when I left. Had to stop short of my first stop. No problem. Continuing to the original first stop, I charged all the way up to 85% which said it would give me 330+ miles of range. My next stop was exactly 248 miles, I drove at mostly 75ish mph, hit 0% and 0 miles, 7 miles before my scheduled stop. Coasted in on reduced performance. So 85% only got me 241 miles. WTF? That’s like a 90 mile shortage. Next leg was 244 miles, I charged to 92%, car showed 344 miles remaining. Programmed home in, showed I would arrive with 47 miles. 244+47= 291 miles, but car showed 344 range, where did the miles go? So I started home. Watched the arrival estimate go down to 29 miles. When in the last town before mine, I ended the route and restarted it. Now it showed I wouldn’t make it, and needed to stop again. So it was literally over 100 miles less then expected. Wtf. Charged to 70% with 260 miles, drove 77 miles home, arrived with 164 miles. 164+77= 241, so again where did the 20ish miles go? Anyone else having issues like this? For reference it was between 70-90 the entire trip, I had the ac on at 70-72 for most of the trip. Sunny, no rain.

Dual Max performance here. Just did a 1000 mile trip in near-perfect conditions (500 each way); dry, level, steady medium temp ~80-85'. Basically controlled variables on everything with a 75mph cruising speed for 98% of the way, best possible scenario. It's the range test that me and @DuoRivians dreamed about.

2.36 miles per kwh consumption which means that if you multiply by the 141kwh capacity, that's 332 miles from 100% to 0%. So now I know, and you should too, best case scenario at highway speeds of 75mph will hit you for a solid 20%.

Go slower, it will improve, and go faster, it will get much worse.

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