ftmaybe
Member
My wife bought an SR+ in Dec 2019. It was delivered with est 250 mile @ 100% range according to the screen, and has since dropped to 246 or so. Not really a big deal, but it did make me wonder about tracking degradation over the years as I didn't pay much attention to our PHEVs and kind of wish I had.
Of course the "miles" doesn't necessarily mean anything, as many have stated in many threads I have read, because consumption can vary significantly between conditions. besides climate control and speed and even fwy vs city factors, I have even seen a 10-15% difference going North vs South due to the grade of the road (I believe).
Comparisons have been made about "ICE gas tank" vs "battery", so if the "gas tank" can get smaller over time then maybe I should get a baseline of the battery capacity.
This last saturday I took the car north on the freeway with the intent to drive it until it was almost out of battery, and get a measure of total energy drawn from the battery. I chose the freeway because it would have almost no stopping, eliminating as much regen from the result as I could manage. I also turned down the regenerative braking just in case. Before I headed out: I reset a trip meter to ensure I could track the kWh used metric. Ultimately I ended the trip at a supercharger @ 6% battery showing 45kwh used. so 45kwh was 94% of the battery.
The problem is (maybe), 45kwh is 94% of 47.87kwh, not 54kwh of alleged capacity (I only get that from the model 3 wiki page. Is that correct? I'm not up to speed on the changes Tesla has made to the model 3 since it was released). I've also seen different numbers thrown around for the "rated" wh/mile is uses for calculating range, it seems like the graph shows 210wh/mile on our car but the "rated line" on the graph isn't exactly easy to read as far as what number it is indicating.
So it could be that the trip meter total energy use isn't 100% accurate? or the car is reserving some battery capacity to go below 0? (I have seen people drive on 0 for awhile in videos). if that's the case, are they reserving 6kwh of power below 0 ? Any other suggestions or comments from people here who know more about this?
I will add that according to the car, 94% of the battery only got me 155 miles @ 288wh/mile. However our driving is almost entirely city and I routinely see 200wh/mile or less which would be a 225 mile range. So yeah, the actual miles can vary wildly.
Of course the "miles" doesn't necessarily mean anything, as many have stated in many threads I have read, because consumption can vary significantly between conditions. besides climate control and speed and even fwy vs city factors, I have even seen a 10-15% difference going North vs South due to the grade of the road (I believe).
Comparisons have been made about "ICE gas tank" vs "battery", so if the "gas tank" can get smaller over time then maybe I should get a baseline of the battery capacity.
This last saturday I took the car north on the freeway with the intent to drive it until it was almost out of battery, and get a measure of total energy drawn from the battery. I chose the freeway because it would have almost no stopping, eliminating as much regen from the result as I could manage. I also turned down the regenerative braking just in case. Before I headed out: I reset a trip meter to ensure I could track the kWh used metric. Ultimately I ended the trip at a supercharger @ 6% battery showing 45kwh used. so 45kwh was 94% of the battery.
The problem is (maybe), 45kwh is 94% of 47.87kwh, not 54kwh of alleged capacity (I only get that from the model 3 wiki page. Is that correct? I'm not up to speed on the changes Tesla has made to the model 3 since it was released). I've also seen different numbers thrown around for the "rated" wh/mile is uses for calculating range, it seems like the graph shows 210wh/mile on our car but the "rated line" on the graph isn't exactly easy to read as far as what number it is indicating.
So it could be that the trip meter total energy use isn't 100% accurate? or the car is reserving some battery capacity to go below 0? (I have seen people drive on 0 for awhile in videos). if that's the case, are they reserving 6kwh of power below 0 ? Any other suggestions or comments from people here who know more about this?
I will add that according to the car, 94% of the battery only got me 155 miles @ 288wh/mile. However our driving is almost entirely city and I routinely see 200wh/mile or less which would be a 225 mile range. So yeah, the actual miles can vary wildly.