Towing Range with Scout - Harvester EREV vs. Full-EV and Traveler vs. Terra

[MadGreek]

Quoted range is 350 miles for the full-EV and 500 miles for the Harvester EREV, so what are we estimating would be the towing range in terms of % reduction per 1,000 lbs let's say? Also, do we think there will be a towing range between the Traveler and Terra?

Hoping our Rivian owners who've towed with the R1S / R1T can chime in on this one.

 

[jhscout]

I have towed occasionally with my Tesla MYP. It just over doubled the watts/mile. Normal usage is 290-310watts/mile and when I was towing, about 620-650w/m. This is concurrent with power usage reports from all of my EV owning friends as well as magazine testing. I was towing a 3000lbs ski boat.

 

[Goose]

Based on Rivian and Lightning reports the impact on range is is more due to aero than weight. Since it doesn’t appear Scout is going for an overly dramatic aerodynamic shape (Lucid style), I’m wondering if aero will be less of a concern here. Plus, in order to reach 350 miles of range in a platform this upright it’s going to have to have about a 150kwh battery.

 

[Jrgunn5150]

Based on my experiences towing open car trailers with a Lightning, I'd expect 100-125 miles of loaded towing EV only range.

 

[ocnsvl]

Trailer aero will play a significant role in power consumption. Towing an open car trailer cuts mileage on my ICE truck by 15-20%. When towing our enclosed trailer it is a 40-50% drop. Folks I've talked to that are towing with Rivian or Lightning are seeing a range of 80-125 miles.

 

[ToadB]

Trailer aero will play a significant role in power consumption. Towing an open car trailer cuts mileage on my ICE truck by 15-20%. When towing our enclosed trailer it is a 40-50% drop. Folks I've talked to that are towing with Rivian or Lightning are seeing a range of 80-125 miles.

The drop is 80-125 or they only get 80-125 while towing?

 

[2wheeltraveler]

Based on my experiences towing open car trailers with a Lightning, I'd expect 100-125 miles of loaded towing EV only range.

Lightning here as well, 8k lb, 32ft travel trailer, averaging between .7 and .9 m/kWh when towing... netting ~ 100 miles of range.

 

[astricklin]

Lightning here as well, 8k lb, 32ft travel trailer, averaging between .7 and .9 m/kWh when towing... netting ~ 100 miles of range.

Which is roughly half the normal efficiency/range, correct?

 

[astricklin]

As has been said, this is going to be highly dependent on the individual trailer.

However, I would expect roughly the same percentage drop as you see in an ice vehicle of the same dimensions.
So if you're towing with a full-size SUV or half ton pickup, then figure out what percentage decrease you have now and assume you'll have that same percentage decrease.

Or just assume worst case scenario of half and be surprised if you get better.

A huge key will be SLOWING DOWN. If you're used to driving 75+ mph towing a trailer, slow down below 70 (heck even below 65) and you'll see a significant increase in efficiency.

 

[2wheeltraveler]

Which is roughly half the normal efficiency/range, correct?

EPA is around 2.4 mi/kWh, I rarely see better than 2 in daily driving (TX highways are 75+ and AC is always running). So Just under half for towing.

 

[2wheeltraveler]

EPA is around 2.4 mi/kWh, I rarely see better than 2 in daily driving (TX highways are 75+ and AC is always running). So Just under half for towing.

I should add, my numbers include slowing down to 65 max when towing, because while the lightning is an EXCELLENT tow vehicle, anything over that gets dicey when you hit side winds, rough roads, etc so it's more of a safety thing.

 

[Foobar]

I have been towing a NuCamp TAB400 and an Airstream Trade Wind 25FBT with my Rivian R1T. It is true - weight doesn’t matter much. Both trailers ended up around 1.1-1.2 miles per kWh even though the Airstream is twice as heavy. On my large battery / quad motor config, that comes out to around 150 miles of range on a full charge. I usually drive for a couple of hours then charge for half an hour. Rinse repeat.