R1S G2 DPM Energy Issues

[phablab]

I am experiencing significant energy issues with my 2025 R1S Dual Performance Max so I am reaching out to the Forum.

ISSUE 1

Manufacturer's spec for energy consumption is 410 miles (range estimate) ÷ 141 kWh (battery capacity) = 2.9 mi / kWh. I confirmed this with Rivian Service support.

I am getting 1.87 mi / kWh. Photo attached for reference. Trip A is total vehicle mileage (never reset). Rivian Service is looking into the issue.

ISSUE 2

Manufacturer's spec for Rivian Level 2 charger energy supply is 11.5 kW up to 25 mi per hour charge rate.

Since put into service, historically, I am averaging around 2 to 4 kW per hour charge rate on all charges large or small no matter what time of day. This is taking way too long. Photo attached for reference. Majority of charging is during the 22:00 - 14:00 charging schedule that I have set to take advantage of utility company's least expensive rates. Rivian Service advised me to contact the Manufacturer because the charger is not covered by Rivian Service.

BACKGROUND

Owned vehicle and charger since August 2024. Driven approximately 2800 miles in All Purpose mode on Southern California freeways and local roads. Parked in a comfortable garage 99% of time when not driving. Rivian Level 2 charger installed inside garage by licensed, professional electrician per Manufacturer's instructions. Charged to Manufacturer's recommended 70% limit about once per week, sometimes less frequently.

Love my R1S but I am dismayed by the confounding performance I am getting from vehicle and charger.

Thank you in advance for input / assistance.

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[Mathme]

Your mileage does seem rather low however, lots of things can dramatically affect efficiency. Does the number on the efficiency graph in the driver display match to what's in the trip computer or are they different? On my Gen 1 Quad with AT 20 wheels and tires, my lifetime efficiency is a bout 2.0. About 1,000 miles ago I changed from the stock Pirelli tires to the Goodyear Wrangler tires that are an inch lower in overall diameter and are more efficient. Since then my efficiency in the trip computer has been about 1.85 miles/kWh yet the efficiency graph shows a lot higher. I've attributed this difference to its summer, the dog goes everywhere with me, and I leave pet mode on. Pet mode will affect the overall efficiency. I'm going on a long road trip and will be curious to see how the mileage stacks up then.

Other things to check are tire pressures and uneven wear which could indicate a bad alignment. Either of those will cause extra friction on the tires and could affect efficiency.

I've also noticed since having the EV that any little thing had a bigger effect on efficiency: wind, elevation, temperature, towing, adding a bike rack, etc.

As for the wall charger, check to make sure it is set to deliver 80% of the amps that your cables and breakers are set. If on a 60 amp breaker, set to 50 on the device which should net you about 11+ kWh/hour. If on a 50 amp breaker, set to 40 on the device and that should net you 9+ kWh/hour.

Also check the vehicle and see what it is set at to receive a charge. Mine is defaulted to 50amps, and will pull 40 when plugged at home (as that's the limit on the charger).

I'd also try charging your R1S at another Level 2 charger like at a friends house that you know delivers more amps. Does the Rivian charge faster there? If so, you know it's an issue with the Rivian Charger. If your R1S charges slow there, then that leads to an issue with your Rivian.

If those don't make sense, then open tickets on both the truck and the charger. There's lots of stories on here about the Rivian charger being rather fussy and not working correctly all the time...especially for the premium they charge.

 

[FooF]

I see a few problems already. Look at your tire pressure it is very low and will result in poor range. Also you speed, hills, wind play a big factor in efficiency.
Your charging history is showing kWh which is how much charge your added to the battery. They rate of charge at is measure in kW.

 

[In2nc]

I have the same spec as you (R1S G2 Dual Motor Max Pack). The onboard charging data tends to start when you plug-in the Riviran, not when it actually charges, and will give you a skewed view on how much energy the Rivian is taking over the charging period. Because of this, I have started using the charging report from my Emporia charger. Also, you did not state what amperage you are wired for (48 Amp?). Have you checked what the current limit is set to in the Rivian? It could be set to a lower current limit than your charger is capable of delivering.

Your running mileage will depend on many factors, including your driving style and how much of your driving is town vs. highway. The 410-mile range number Rivian uses is with the EPA test loop, which no one drives, so you should expect less than that. I typically get around 2.5 Mi/KWh with mixed hiway and city driving. I have noticed that EVs like city driving more as I can above 3mi/KWh in town and stop and go driving.

 

[mikehmb]

2900 miles over the past almost year suggests a lot of idle time, which will translate to vampiric loss, which will clobber your total "efficiency" as shown on the meter. Best bet is to charge to 70%, do a drive at normal speeds (highway + city), and see what you get over 50-100 miles.

Back-of-napkin math:
2900 miles, assuming standard efficiency: 1000kWh
1.5kWh/day vampiric losses (350 days): 525kWh
Total: 1525kWh
2900 miles / 1525kWh = 1.9kWh/mile

Your tire pressures are too low. Not sure which tires you have but this is definitely too low and will reduce efficiency.

Charging: what is your amperage setting in the charging tab?

 

[Audiotek]

Running 40 PSI on a 7K+ Pound vehicle when the minimum recommended PSI is 48. Bruh smh.

 

[Polar]

What is the amperage of the breaker your EVSE is running from? 40, 50, 60?

we need to know this detail, also how are the dip switches set on your EVSE?

 

[phablab]

Very good information. Thank you for all responses to my original post.

I have installed 60A circuit breaker x .80 = 48a charging config on Rivian app as well as in vehicle. Rivian Charger DIP settings are factory default for 48A.

Scheduled Rivian Mobile Service appointment to examine further. Rivian Service comment that one possible cause could be battery hardware issue.

Will pay close attention to energy consumption after next 70% charge and inflating tires on 22 wheels to 48 psi factory recommendation. BTW received the vehicle returned from previous Rivian Service Center with tires at psi indicated in photo (above). Of course that's an owner responsibility but suggests it was not checked during that service appointment. Rivian Service stated TPMS alert does not activate unit below 20% recommended tire psi.

 

[BCondrey]

2900 miles in a year? I don't think you have broken it in yet.

You will never get 2.9 eff, BTW. Unless you drive at 40 mph. This is probably a combination of low tire pressure and short trips. I have a similar config and my avg after 23K miles is 2.5 miles/kwh.

 

[BCondrey]

To troubleshoot the charger, try these things as best you can:

• Reboot the Rivian, power cycle the charger, try charging.
• Try charging a different EV from the Rivian charger.
• Try using the Rivian Mobile charger (if you can find a 14-50 outlet)
• Take the Rivian to a L2 charger someplace else, like a chargepoint or something, try it.
• Measure the voltage across the two hot legs of the charger, if comfortable working with high-current. Should be 240V.

Some combination of that should point you in the right direction. I just had a problem with my Grizzl-e charger and had to do all that to get a warranty replacement.

 

[bigsky]

As for the wall charger, check to make sure it is set to deliver 80% of the amps that your cables and breakers are set. If on a 60 amp breaker, set to 50 on the device which should net you about 11+ kWh/hour. If on a 50 amp breaker, set to 40 on the device and that should net you 9+ kWh/hour.

I sure as hell hope that a Rivian charger and/or your Rivian itself does not and will not allow you to set the charging rate above the maximum safety derating, e.g., 48 A (not 50 A) on a 60 A breaker; 40 A on a 50 A breaker, etc.

 

[sanjoseR1S]

I also have a 2025 R1s dual max preformance. Most of my miles are around town and I get 2.5 - 3 miles/kwh. Road trip and highway miles are much less efficient with accessories mounted and driving 80mph. Our average over almost a year is 2.5 miles/kwh after 12k miles.

No issues with home level 2 charging. Rivian app matches what the emporia charger puts out. Miles add up as expected.

The charge summaries are a little confusing for me. What does your Rivian app show while you are charging?

 

[HaveBlue]

If you are only getting 2-4 kwh charge rate, I'm assuming it is not full when you go to use it. That would mean you have an issue. Otherwise you may be plugging it in and 2-4 hours later it is full but you leave it plugged in for ten. You need to look in the charge history to see the rate while charging.

 

[bigsky]

ISSUE 2

Manufacturer's spec for Rivian Level 2 charger energy supply is 11.5 kW up to 25 mi per hour charge rate.

Since put into service, historically, I am averaging around 2 to 4 kW per hour charge rate on all charges large or small no matter what time of day. This is taking way too long. Photo attached for reference. Majority of charging is during the 22:00 - 14:00 charging schedule that I have set to take advantage of utility company's least expensive rates. Rivian Service advised me to contact the Manufacturer because the charger is not covered by Rivian Service.

I don't believe that there is anything wrong with your Rivian charger. No power cycling, rebooting, etc. needed. I believe that the issue might be the Rivian app itself. Once again, Rivian software experts, god love 'em.

I keep very detailed logs on my EVs charging sessions; noticed this issue of seemingly very low charging rate lately as well and confirmed that the app information is erroneous. At least for the two charging sessions I Initiated since July 25. Not sure if related to software update 2025.22.01 installed on 7/23.

Reason #1
The Rivian infotainment GUI shows for the last charging session 40 kWh in 3 hours, 50 minutes or 10.4 kWh. The Rivian app, on the other hand shows in the History section that this charging session lasted 11 hours 16 minutes or 3.6 kWh. Third-party logger I use and my own data say that charging rate was 10.4 kWh. Typical charging rate is between 10 and 11 kWh.

Reason #2.
Next-to-last charging session: charging history on app says 53 kWh in 11 hours and 20 min., or 4.7 kWh. My own data as well as third-party logger showed that actual charging rate was 10 kWh in 3 hours and 56 min.

 

[HaveBlue]

My Autel charger is nice because it logs every detail of everything.

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