To get 459km; I would need the rated consumption to be 66500 / 459 = 144Wh/km.
144Wh/km is actually the value I remember reading about the EPA rate used for 2019 cars here a while back.
The value used in the car for the 2018/2019 Model 3 LR RWD is 245Wh/mi, 152Wh/km, as
@eivissa has said.
The Rated Consumption is not shown anywhere in the car. It's only a calculated fixed value that is derived from looking into the BMS with Apps like SMT.
(For others, not you: note that none of the below should be confused with the "Consumption" values in your table above, which you are not claiming to be the rated consumption values.)
I believe it is indirectly shown with three methods without SMT, just using the car, and will match SMT as long as the vehicle capacity is below the degradation threshold (last I checked - haven't checked for a while, and software changes, but I've never seen this situation change, so I assume it's still the case):
1) Rated consumption line. This line on the Energy Consumption screen is always 5Wh/mi, or 3Wh/km, higher than the Rated Consumption constant used by the vehicle when calculating rated range at 100% for the given battery capacity (when below the degradation threshold - again, this doesn't apply when the battery energy content at 100% is above the degradation threshold - perhaps part of the reason for the 5Wh/mi or 3Wh/mi correction, but who knows...). In this case, anyway, we're talking about a vehicle below the degradation threshold. Don't have the exact numbers, but anyway, for
@jyavenard : 69.6kWh/459km = 152Wh/km, 245Wh/mi, so the line is at 250Wh/mi, 155Wh/km. You must "drive to the line" and really have it
overlap to get the value. Going back to the degradation threshold thing: The line stays in the same position when energy exceeds the threshold, so this value will just understate energy content per rated km/mi when the battery is above the threshold. Not a big deal anyway.
2) You can always take the energy screen consumption values in average mode and calculate it. Do this at a high SoC value for accuracy:
(Recent Efficiency * Projected Range) / Rated Range Remaining = Charging Constant. Apparently not all vehicles (Model S Plaid?) have the energy screen (???) ? But Model 3 does which is what is relevant here.
3) Least desirable method: For a very large charging event, you can swap between energy and distance modes while the car is still plugged in, and see how many kWh were added and how many miles/km (km better for accuracy) were added. The ratio of energy to distance will give you the rated consumption value (without any 5Wh/mi or 3Wh/km correction factor). Has to be a very large charging event to get close to three significant figures (this value only gives you two significant figures unless you have an app that gives you the additional decimal point to the energy added (I think it's available to the API though I'm not sure on this point, but using an app wouldn't count anyway)). But in any case you can look carefully at the behavior of the added energy, and you can get the value this way. It shouldn't matter if the car uses a lot of energy due to accessory use, etc., during the charging event, though I don't use this method, so I can't be 100% sure (it'll add to both km and energy in the right ratio, or maybe it just gives the net amount - I don't know, don't pay attention).
("Interesting" aside - note that this proves that the kWh added on the screen does not correspond to kWh added to the battery; it's actually 4.5% too high on the screen, due to the buffer effect. The kWh added on the screen is not a direct measure of the energy added to the battery- it's just the rated miles added (which actually DOES correspond to the measured energy added, but this is 95.5% of the rated value per km) * the charging constant! Anyway this discrepancy can be confirmed by comparing to SMT.)
on the energy screen, the dotted line, which shows not average energy but the rated energy, had a value (144Wh) shown on the screen by the line on the left
ow the rated Wh/km line is lower (from 144 down to 137)
Do you have a picture of this? I'm not near my car at the moment, so it's possible they have eliminated the 5Wh/mi, 3Wh/km discrepancy (between the constant and the rated line) that always used to exist on the energy consumption screen. I doubt it, but it's possible.
I'd expect the rated line in the 2021 Model 3 LR AWD to be at 140Wh/km or so, meaning a 137Wh/km constant (as has been stated).