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

[carsly]

I’m not sure. Have you tried setting up a separate 2.4ghz and 5 ghz WiFi and see if you can get connected on one of them? Is it a satellite or mesh system? Assuming you’ve tried a hard vehicle reset you might try resetting routers to default settings see if it can connect. If it still won’t it seems like you need need a service visit.

also trying a service like electrafy would give you better visualization of power usage during the day vs each drive and how often it is sleeping.

The vehicle shows connected to WiFi in the driveway. It's an Eero mesh network - mix of Max 7 and Pro 6E.

Will try a hard reset. Good idea.

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[R1Skol]

Glad I'm not the only one with a Gen2 R1S (Large+ so the weight of a max pack with 80% of the juice.) thinking something is very wrong with efficiency. I wonder if CT doesn't factor in things like climate control/hold etc where as Rivian does. I've towed very little (20-30miles tops) I like to drive the speed limit probably why I'm needing to replace the OEM Pirelli's (22's) at 16k miles. Trip B shows 12k miles (approx 7 months) and a whopping 1.54 mi/kWh efficiency. I reset Trip A after the efficiency update/fix. That says 2,500 miles and 2.14 mi/kWh. The 15 min efficiency window often shows 1.5 mi/kWh when I start driving then slowly climbs.

 

[carsly]

Glad I'm not the only one with a Gen2 R1S (Large+ so the weight of a max pack with 80% of the juice.) thinking something is very wrong with efficiency. I wonder if CT doesn't factor in things like climate control/hold etc where as Rivian does. I've towed very little (20-30miles tops) I like to drive the speed limit probably why I'm needing to replace the OEM Pirelli's (22's) at 16k miles. Trip B shows 12k miles (approx 7 months) and a whopping 1.54 mi/kWh efficiency. I reset Trip A after the efficiency update/fix. That says 2,500 miles and 2.14 mi/kWh. The 15 min efficiency window often shows 1.5 mi/kWh when I start driving then slowly climbs.

Thanks for sharing your numbers. I thought these 22's were the 'efficiency' wheels. Can't imagine what this would be doing on 20" all terrains.

 

[riverie]

Trip B shows 12k miles (approx 7 months) and a whopping 1.54 mi/kWh efficiency. I reset Trip A after the efficiency update/fix. That says 2,500 miles and 2.14 mi/kWh.

If your driving habits did not change drastically 2500 miles ago, then I would suggest that the Trip B data is unreliable and should be disregarded. Reset trip B.

 

[mkhuffman]

This is what I'm seeing. Mind you, I drove the car yesterday for 40+ minutes and Spotify was working (meaning data connection was up) so not sure why the last sync was two days ago. Ideas?

The data connection to the Internet is working because you can use Spotify, so the issue is the connection to the Rivian servers. Rivian Roamer reported that there have been problems getting data from the Rivian servers lately and you can improve the situation with a hard reboot of the truck.

 

[carsly]

Just did a hard reboot. Red cloud in the app seems to be gone (for now). Fingers crossed!

Appreciate the tips

 

[carsly]

Trip B shows 12k miles (approx 7 months) and a whopping 1.54 mi/kWh efficiency. I reset Trip A after the efficiency update/fix. That says 2,500 miles and 2.14 mi/kWh.

If your driving habits did not change drastically 2500 miles ago, then I would suggest that the Trip B data is unreliable and should be disregarded. Reset trip B.

Could be seasonal/weather if trip A were primarily in cold winter months and trip b is summer/early fall?

 

[mikehmb]

I've done 8,000 miles in 18 months in the Cybertruck, it's not putting up numbers like this. Nowhere close.

Doing some quick calculations:

9 months, approximately 275 days, and 2kWh/day vampiric loss = 550kWh
3000 miles driving at presumed average of 2.5 (2.2 to 2.8, take average) mi/kWh = 1200 kWh

1200 + 550 = 1,750

Recalc mileage and end up with 3000/1750 = 1.714 mi/kWh total, including losses

You're at 1.47 so something is definitely up, but as others have said, there was a s/w fix for mis-calculations earlier in the year and you need to reset to get better data (unfortunately).

 

[Jonger1150]

My 2024 Dual Large pack averages 2.48 over the last 10,000 miles.

 

[Oldsmobile_Mike]

1.47? That is astonishingly low. As someone else mentioned, are you only driving very short trips? Also, your tire pressure is low.

There's tons of threads & polls on this topic already, but just to give you another data point mine is 2.24 lifetime over 23k miles / 32 months. 2023 R1T QM with the original 20" AT tires. 50/50 city/highway driving, minimal towing, minimal off-roading.

+1 for ElectriFi for additional insights. Good luck!

 

[portdirect]

I was at 1.35 in our 2025 trimax, though not seeing really low efficiency when actually driving. They eventually found that the center console charger had a short to ground - causing excessive vampire drain. Our gen1 is at 2.09 lifetime.

 

[R1Skol]

I've been jealous of folks writing about 2.5+ in town because I had never seen those numbers until recently. As others have said short trips are essentially just like driving on interstate. When driving 75-85 & no elevation change (super flat around here) I average 2.0 with that said lots of free chargers near me so efficiency has never been a big issue. About to put some toyo 3 evs or ko3's on the 22s for winter fun in MN. I could reset trip B but keep it for nostalgia.

 

[carsly]

I was at 1.35 in our 2025 trimax, though not seeing really low efficiency when actually driving. They eventually found that the center console charger had a short to ground - causing excessive vampire drain. Our gen1 is at 2.09 lifetime.

interesting....appreciate the tip

 

[MountainBikeDude]

Situation: I picked up a 2025 Gen 2 Dual Large in Feb 2025. So it's been the tail end of winter, spring and the early part of Fall here in NJ - all good weather for EV driving.



After almost exactly nine months I thought I'd check in on my efficiency -- and it was not at all what I expected given the little driver's graph seems to typically show me averaging 2.2-2.8 mi/kwh. My usage pattern has a lot of local driving in all-purpose mode, standard ride height, soft suspension and I plug in 4-6 times/week out of habit charging off-peak. Running OEM 22" sport brights which are always within 1 PSI of recommended pressures, I adjust regularly in spring and fall in particular given the temp changes.

I knew the Gen 2 dual large (default FWD) is less efficient than my Cybertruck AWD (default RWD), but this is less than half the efficiency of what I'm seeing in the Cybertruck. How is everyone else faring? I'm getting concerned for how much juice this monster will consume in the depths of a NJ winter...

Tesla doesn't account for all energy usage, like phantom drain or sentry mode in it's trip data like Rivian does. That's likely the reason you're seeing better efficiency overall in your Tesla.

 

[CANCERDOC]

Not that it is the culprit here but you claim you are within 1 psi of factory specs for the 22” wheels but your video shows 45psi which is lower than the factory recommended 48psi.

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