What's your lowest mi/kWh efficiency?

[SteveInBend]

I don't have any data or anything to post, but since there's a thread about highest efficiency I figured there should be one for the lowest! C'mon folks, there should be some lousy numbers out there.

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[SolartoEV]

I pulled my wife's 2019 rav4 on a uhaul trailer heading south from Rochester,NY to Dansville, NY. Its 65 miles an hour and uphill. I normally average about 1.5 with no load.

Hauling the trailer over 40 miles I was getting .6 kWh. Sadly the stress made it so I didn't take any photos.

 

[CharonPDX]

This thread has a bunch of "low mark" efficiencies: https://www.rivianforums.com/forum/threads/lifetime-miles-kwh.43862

 

[SolartoEV]

This thread has a bunch of "low mark" efficiencies: https://www.rivianforums.com/forum/threads/lifetime-miles-kwh.43862

Who's is that low?

 

[CharonPDX]

Who's is that low?

I see now the later comments in that thread pointing out the bad math in the screenshots. So it looks like based on the math, I might have the lowest overall.

Going out and getting a fresh photo and doing the math manually, looks like I'm at 1.77 mi/kWh. (Trip A was accidentally reset about 3000 miles into ownership, so this excludes a bunch of mostly-towing-an-8000-lb-trailer.)

My efficiency should improve, I just swapped on 33" General Grabber HTS60s in place of the Pirelli 34" ATs. And the 8000 lbs "big box" trailer was replaced with a 3500 lbs teardrop, so towing efficiency has massively improved. Two years ago, I was probably at 1.5 mi/kWh long-term, but I can't find a photo of Trip A between 1,000 miles and 20,000. :-D

 

[Fencer]

I don't have any data or anything to post, but since there's a thread about highest efficiency I figured there should be one for the lowest! C'mon folks, there should be some lousy numbers out there.

Do I win this one Steve?

 

[SolartoEV]

Do I win this one Steve?

Where is your kWh?

 

[Fencer]

Where is your kWh?

38.7 MWh

 

[SolartoEV]

38.7 MWh

3.1 mi/kWh

 

[iowa_don]

I don't have any data or anything to post, but since there's a thread about highest efficiency I figured there should be one for the lowest! C'mon folks, there should be some lousy numbers out there.

Well . . . my service center can beat anyone's low. I dropped my 2025 R1S off for service and I reset Trip A. When I got it back, they had driven 10.3 miles and their Mi/kWh was 0.6!!! That is 1575 kWh per Mile or an MPGe of 20.2!!! Perhaps they had the A/C running while it was sitting in the AZ sun for several days. I don't know. My worst personally, driving on the highway, is 1.81 driving from North Phoenix to Flagstaff, total elevation gain of 5,300 feet (climb 8,500 ft, descend 3,200 ft, 11.26 miles of regen).

 

[FraserC]

We just drove from Cincinnati to Seattle towing a cargo trailer whose gross weight was 8,500 pounds. Good job we had the Max pack, because quite a few drives from charger to charger only got 140 miles, even driving 50 mph some of the time. Lowest average we got was 0.76 mi/kW for a segment, but pulling the trailer up steep grades at speed knocked it down to 0.5 mi/kW in transients. I also had to slow way down on climbs to keep the battery temps out of the red, while the outside temp was in the nineties.

 

[MountainBikeDude]

38.7 MWh

 

[iowa_don]

My service center can beat anyone. I dropped my 2025 Dual R1S for service and re-set Trip A. When I got it back they had driven 10.3 miles on flat ground, no towing and the Mi/kWh was 0.6!!! That's an MPGe of 20.2 or 1,667 kWh per mile!!!! I figure the only way that happened was they had the car outside in 100+ degree heat and ran the A/C continuously???

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