Getting terrible efficiency numbers

[Nolmac]

Am I the only R1T owner in this forum getting terrible efficiency numbers?
I have the 20” AT so it’s expected to be less than the 21 or 22’s but I am avg 1.44 mi/kWh in daily driving. Hardly ever punching it.
also one night in 4 hours lost 10% SOC
Take a look: you can see from the time stamp what I lost!

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[MountainBikeDude]

Seems quite excessive, but It's difficult to tell what the culprit is without more detailed information.

Are you driving lots of hills etc?
Is your vehicle naked or do you have a bike rack or the like attached?
10% power loss over a short period seems very excessive, are all your outlets off in the vehicle while you're away from it?
Can I suggest a reset to maybe clear any software anomaly that may be the cause.

From what I can gather from the app screen shots, the vehicle is going to sleep, just seems something isn't complying with that low power state.

 

[elektrode]

My aggregate efficiency numbers suck too. I have no idea how people are getting what they get and I’m on 21s. My last two trip meters say 1.44kWh and 1.63kWh.

100% range says est 301 which itself isn’t terrible, but the aggregate m/kWh suggests I’d never make it.

I think I’m also draining about 5%/day in vampire drain. Yes, I use gear guard at home, and yes Gary wants to interrupt me every time I put the car in drive to show me a video of me walking to my car. (How hard is it to filter events that are < 30 secs and end in the vehicle being unlocked?! Actually sometimes it’s more than 30sec because I have to awkwardly stand at my locked door waiting for PAAK to work. “Don’t make me take my phone out of my pocket and unlock you!” is basically equivalent to “open sesame!”) (rant mode off)

 

[MoreTrout]

Definitely not normal. I'm 4200 miles in on my truck with the 20"ATs and averaging around 2.25 mi/kWh and regularly get >2.3 on a longer trip. And the majority of that was All Purpose, not even Conserve. Rare to lose more than 1-2% when sitting for 24 hours and have never seen 10% drops.

I agree with doing at least a soft reset and maybe a hard reset after making sure outlets are off. If it doesn't improve, it's worth a service ticket. Also, check your charging session summaries. I usually only lose around 1% to cabin/battery temp and low voltage applications.

 

[connoisseurr]

You’re in PA. Have you also been experiencing 40s to 50s for the weather the past few days?

You’re in for a real treat in the winter… you’ll lose up to 30% of your range in cold climates.

 

[seajayseven]

I’m in pa and would happily swap
Wheels with you (21’s) if you want better numbers. Throw in some cash too. My wheels have less than 400 miles on them.

 

[Budman]

If you are doing short trips, those will have lower efficiency numbers because the battery pack is cold.

if you reset your trip meter and do a longer, say 50 mile drive with no stops, what does it say?

 

[loudog3114]

72 miles at 29mph? Tons of traffic? Or did you stop for a while but keep the truck on?

 

[Grajjie]

My efficiency has dropped as well. The first few days I had the truck I was getting around 2 mi/kWh but now I’m getting about 1.5. However it has been raining nonstop in the NYC area and temps dropped from the 70-80s to the 50s-60s so I’d expect both the rain and lower temps where I had the heater and heated seats/steering wheel on to be a factor.

 

[MoreTrout]

You’re in PA. Have you also been experiencing 40s to 50s for the weather the past few days?

You’re in for a real treat in the winter… you’ll lose up to 30% of your range in cold climates.

I did a trip last week and the first 50 miles or so were early morning, relatively flat highway, mostly on ACC around 72-74 mph in 43 deg weather and I averaged around 2.00 for that stretch of it, so temps alone aren't enough to explain what the OP posted. He posted a relatively short distance and not sure what wind conditions and elevation changes were, but it would have to be pretty severe to get it that low compared to what I see in my driving.

 

[loudog3114]

There is massive overhead for every trip start in lower temps to get the battery pack, interior, etc up to temp. Since I dont have a rivian yet I dont know how the trip computer works but if it continues after stopping until it is manually reset and the OP stopped and started again several times over that 72 miles that is the issue. EV's are very inefficient doing small trips in temps below 60 or so. My P100D gets 1000wats/mi (1mi/kw) for the first ten minutes or so of every drive in winter while it heats everything back up. Remember, you're not just warming the cabin air, you're warming the seats, the dash, all the metal, the glass, the carpet, etc. All very costly.

 

[Dark-Fx]

Trip meter includes standby power usage. Most of the time when people are posting their efficiency meters it's after a long trip with little to no standby time/energy. I find doing a full reset gets rid of the excessive phantom drain until the next time it starts happening. Most likely something is stopping your main computer from staying in sleep.

 

[jemkewl]

I'm in hilly south eastern PA with 21s and have a short 5 mile commute to work where my truck sits in a parking garage during work hours without charging. Gary is turned on only when away from home. I drive on highways to pick up kids after work a short 10 miles away. We use the truck as the primary vehicle on weekends for the typical family of 4 needs (events, groceries, etc.). I do not experience anything below 2/mile even if I drive like I stole it - hope it stays that way. Seems like something is not right.

Edit: just snapped some pics for reference. I have 1466 miles on the truck. Haven't reset trip A or B in a while. Plan to leave B as is moving forward

 

[CommodoreAmiga]

My aggregate efficiency numbers suck too. I have no idea how people are getting what they get and I’m on 21s. My last two trip meters say 1.44kWh and 1.63kWh.

100% range says est 301 which itself isn’t terrible, but the aggregate m/kWh suggests I’d never make it.

The Rivian trip computer is broken, afaik. It says I've averaged ~2.4 mi/kWh over the last ~5k miles, yet it says my 100% range is only 280 miles. I've tapped the "reset" button many times and it never changes anything. I've got a service ticket in and it's crickets from Rivian. The most I can get from them is "we're waiting for the diagnostic team to look into it". That was a month ago :-(

 

[manitou202]

The trip computer includes vampire drain. I did a coupe of tests by resetting the computer and then accumulating a couple of miles. Overnight the trip computer would add the vampire drain to the energy used and my efficiency would tank. So if you are driving a low number of miles each day, it will make your efficiency look terrible.

I'm not a fan of this approach by Rivian, I would rather the trip computer shows purely the energy used while driving. Otherwise it makes it really difficult to keep track of your actual driving efficiency. There is also no running trip log. Everything gets deleted after each reset.

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