Not trying to sound like a jerk, but "typical efficiency" just isn't a thing. It varies so wildly based on speed, temps, road conditions, and definitely wind.
Weight. Weight has negative impact to drive/ handling characteristics, payload, towing capacity, etc. We want energy density to increase, so a given battery pack size has more kWh available at the same/ lower mass for longer range, lower cost, etc.
Don’t forget dual motors models are running with single motor the majority of the time in “All purpose” mode. Driving like a saint on the highway, with the suspension in lowest and “conserve” on my quad I can hit 2.7 mi/kwh.
Of course, but if you have been driving for a while and paying attention to your efficiency, you can see clear trends. You can see your efficiency for each trip you take. You can see what you get around town and on the highway.
I doubt you would get 2.7 mi/kWh at 80 mph. So you must be at or below the speed limit. I guess that is what you mean about about driving like a saint!
70mph is the average interstate speed limit in the USA, some are higher some are lower but the average is 70. He must be doing the speed limit, makes a pretty big difference on range & possibly liability in an accident.
Yep, I agree. Air resistance exponentially increases with speed. The difference between 70 and 80 is significant. But 2.7 still seems high at 70 mph.
Costs aside, you cant get around physics which means Rivian isn't being 100% honest here. A larger battery isn't significantly more efficient. But they seem to be claiming that a marginal increase in battery is netting them better gains than the large battery. Either that, or the capacity still isn't correct. Add to that, a different cell chemistry may have hitherto unknown downsides like increased degredation, poor cold weather performance, weird charging curves, etc. Basically, we just dont know what we dont know. Yet to say it doesn't matter is just inviting people to step into decisions without all the information. Bad idea.
Here in Cali most Freeways are posted at 65, and yeah you’d need to be cruising at that speed. Which can be annoying as flow of traffic is 75+. Still it can be done when you promised to be home by X o’clock, and a charging stop would scupper it
.Not really, there's enough data out there on enough EV's, and specific EV's, to say that based on temp/wind/speed, efficiency can be pretty predictable. And then from there, adjusting with multipliers so that comparisons can be maintained. We also have a wide range of highs/lows here on the forum. So if I read someone is getting long term mile/kwh in X region with Y config and another owner is getting a different number in Z region with Y config, then we know the regional change (temperature most likely) is the cause for the discrepancy. And keep in mind, controlling pack temp is something the car is designed to do. So 5,10/15' temp differences aren't going to give large swings to the number either.
I agree with you Donald. Not only for the money but also for the years of waiting since 2020 in my case. I have refuse the LE in order to get a Max pack of 180 KWhr. Consequently, I have remove the max pack and I will use it while waiting for a significant Sylverado RST with 229 KWH for towing. 149 KWhr is not enough for towing a travel trailer in my view. I am… disapointed...
