Efficiency

[mkg3]

If you're after efficiency, then high regen and a smooth driving style that avoids the friction brakes is required...

Just so you know, high regen actually is less efficient than lower regen on highway driving. Also controlling the accelerator pedal as you slowdown, rather than just letting the high regen just slow the vehicle down.

While regen charges the batteries, the motor is constantly being oscillated between high-low current flow resulting in transient condition. The result is a spike in power consumption thoughout.

It would be more efficient if Rivian had a low regen setting rather than standard, to allow the vehicle to coast without slowing the vehicle down too much and slow acceleration to minimize the motor transient power spikes. You are right that smooth driving is also a key.

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[BrianNakata]

While regen charges the batteries, the motor is constantly being oscillated between high-low current flow resulting in transient condition. The result is a spike in power consumption thoughout.

Uh, you'll need to provide more explanation of this statement.

I haven't done any testing of high vs standard regen and efficiency. I figured Rivian defaults to high regen since it's the most efficient and would help avoid complaints about not meeting range expectations. Why would they not have the drive mode defaults set to the most efficient setting?

 

[evguy]

Uh, you'll need to provide more explanation of this statement.

I haven't done any testing of high vs standard regen and efficiency. I figured Rivian defaults to high regen since it's the most efficient and would help avoid complaints about not meeting range expectations. Why would they not have the drive mode defaults set to the most efficient setting?

If I recall, when I took deliver the default was standard and I switched to high. Did they change the default?

 

[BrianNakata]

Ah, interesting. Mine was high when delivered so I assumed that was the default.

Checking the Owner's Manual, you are absolutely correct since it says that the default is Standard for all modes except for Snow and Soft Sand.

 

[JPC]

Yeeesh my efficiency is terrible by comparison. Lifetime of the vehicle at 1000 miles is 1.7. About 600 of that was a roadtrip with my R1S fully loaded, going around 85 most of the time -- got 1.75 on that trip. Mostly short drives beyond that.

 

[WSea]

Local short drives and hills are what kills my efficiency

 

[virgnia_rivian]

It’s not a Tesla. If you expect that efficiency you’ll be disappointed.

It‘s much bigger and heavier. The OP’s efficiency is on target. The range is due to the size of the battery pack.

 

[zefram47]

It’s not a Tesla. If you expect that efficiency you’ll be disappointed.

It‘s much bigger and heavier. The OP’s efficiency is on target. The range is due to the size of the battery pack.

Bingo. My MINI got over 4 mi/kWh in good weather. I knew going in the R1 would be around half the efficiency of my MINI. But it's also around 3x as efficient as my 4Runner was (assuming standard conversion to mpge).

 

[LL75]

I'm at 1850 miles in with my r1s with efficicency of 2.09. 21" wheels With 400 miles of conserve mode driving. ( I got about 2.4 kwh with that trip). Yeap, Short trips will definitely kill the efficiency

 

[Lizardo]

I'm at 1850 miles in with my r1s with efficicency of 2.09. 21" wheels With 400 miles of conserve mode driving. ( I got about 2.4 kwh with that trip). Yeap, Short trips will definitely kill the efficiency

Wouldn't do a lot of conserve mode driving unless its on highways. It'll wear your tires out much quicker.

I'm on 21s without aerocovers. Installed running boards from EV sportsline.

Pre running boards - avg of 2.2 kWh efficiency over 5000 miles.

Since last reset with a mix of city and highway, I think I'm around 2-2.1 kWh efficiency, need to check it. But its over a small range (like 120 miles including 2 days of heaving rain).

 

[LL75]

Wouldn't do a lot of conserve mode driving unless its on highways. It'll wear your tires out much quicker.

I'm on 21s without aerocovers. Installed running boards from EV sportsline.

Pre running boards - avg of 2.2 kWh efficiency over 5000 miles.

Since last reset with a mix of city and highway, I think I'm around 2-2.1 kWh efficiency, need to check it. But its over a small range (like 120 miles including 2 days of heaving rain).

Yea. That was all highway on that trip on conserve mode. I only use all purpose mode when driving in town.
BTW. So no efficiency diff with the running board? I have one on ordered but who knows when I supposed to received it. Supposed to by april but didn't hear anything from them

 

[Lizardo]

Yea. That was all highway on that trip on conserve mode. I only use all purpose mode when driving in town.
BTW. So no efficiency diff with the running board? I have one on ordered but who knows when I supposed to received it. Supposed to by april but didn't hear anything from them

Still early for efficiency. I think if I hit 500-1000 miles, it'll be a better judge of any changes and avg out for all driving, etc.

Had a highway drive of about 90 miles and it said it was like 2.4? kWh. AP mode.

Haven't driven in conserve mode really.

 

[Operator]

I'm at 1000 miles. 1.8 mi/kwh. Running all purpose mode. Jealous of the folks getting 2

 

[LL75]

I'm at 1000 miles. 1.8 mi/kwh. Running all purpose mode. Jealous of the folks getting 2

I think the reason that I got above 2. is because my wife drive it the most. If It was me, it would be sub 2 for sure since I drive like an ass.

 

[elektrode]

Not sure what was going on for me yesterday, but I drove 30min and saw the batt gettin up to temp and was approaching 2.2-2.4.

1.5hrs later on the way home (after parking for game), the efficiency bottomed out at 1.1 for like 10min!

Almost as bad as towing, but I was just driving.

75-77 degrees outside. WTF?

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