For the EV estimated range, how many miles of driving history do you think it uses to calculate this? Do you think it rolls off after like five or 10,000 miles? Curious to hear peoples gases, no need to read further unless You are also curious. My personal guess for the RAV4 prime was about 10,000 miles of history is used, and once history is over 10,000 miles old it’s no longer in the calculation. I say this as I got my car new and I drive in optimal range conditions, and once I cross the 10,000 mile mark it appeared that my range would go up and down not necessarily with how I had been driving, making me think that previous very efficient history had been rolling off or inefficient parts have been rolling off. Make sense? The reason I ask, is because I purchased a one year old Prius prime. Since getting it I am averaging 5.4 miles/kWh, and getting about mid to upper 50s in range. However, my estimated range has slowly crept from 31 up to 45. I’ve only put like 3000 miles on it and it had 10,000 miles when I got it . (With my RAV4 prime, within a few months I was able to go up to 60 miles estimated range, but I had no existing history on it.)
All I can tell you is that the indicator of EV miles is very accurate. I set my trip meter to measure EV miles as I drove, and it matched EV miles remaining accurately. I can't say if it remains accurate in very cold weather, but the car is comfortable inside when the outside temps are far below zero.
I would think it was linked to a trip odometer; maybe lifetime or tank. Various other estimates would get reset when those odometers were reset in other cars. Fluctuations with lifetime odometer calcs could be from the minor variations in recent efficiency that are normally happening, instead of old data being flushed.
My wild guess would be neither, but that EV range at recharge would be based on the efficiency in use during the last cycle, and that it would continuously adjust according to the efficiency in the current cycle. It should be about the same method of calculation as range estimation with gasoline. When one has just filled up, the display will show a total range based on the total mpg since the prior fill. The swing in my Corolla was between 450 miles and 550 miles depending on the mpg in the prior cycle. In my Prius (with the smaller tank) it ranges from 470 to 525. The curious thing to me is that the combination of remaining range and elapsed miles since fill up increases for the first quarter tank or so, but then plummets in the last 100 miles of range.
It’s definitely not 1000 miles or less. It’s more like 5k, 10k or just the life of the car. I’m guessing it’s 10k as when I got my Prius it had 10k miles and using the previous owners range over the 10k and my actual range of about 56, weighted averaging both gets me to about where I am. Maybe it uses like 7,000 -10k miles of history.
No clue what you mean as their algorithm just looks at your history and expects you to be driving the same. It’s the same for gas cars that give total mikes until empty, they look at a history over a certain period and expect driving style to be the same. I’m just wondering what people think that history is. I think it’s like 7-10k mikes of history, but I can’t understand why my EV range was climbing fast and now has completely stopped climbing and still is way short of what I am getting. (My driving area is pretty much optimal for ev range. (Low speed, no highways, not a lot of stop signs, or lights, except for on slight hills (so can coast up to them, or use hill to get going again), All Basically at sea level, and mostly flat, no heat needed) ) .
I'll say it again; I set the trip meter, and it kept pace with the EV range indicator, almost to the kilometer.
This should be easy to test. Charge, zero out the trip odo and observe the forecast range. Continue to observe the combination of elapsed miles and remaining range while you drive inefficiently and do that all the way down to nearly zero. Did the sum of remaining range and elapsed miles remain constant or decrease? Next charge, zero out the trip odo and observe the forecast range. Continue to observe the combination of elapsed miles and remaining range while you drive efficiently and do that all the way down to nearly zero. Did the sum of remaining range and elapsed miles remain constant or increase? If the fluctuation of the sum is significant, more than 5%, it can't be working on a 7-10k average, but is working on something shorter.
when you drive the same all the time, it doesn't take much calculation. but when your driving is varied, there is a lot that can potentially be taken into account, or not.
We've got a 2019 (Gen 4) Prime. My wife is a teacher and normally drives it 100 miles per day. Most of that is highway, so during the school year it normally shows a little over 20 miles of EV range fully charged. During the summer, we stay around town where the EV lasts longer, and it's not that long before it's showing 25 or more miles of EV range fully charged. If I had to guess, maybe 40-50 miles is all.
