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And one last thing. My Tesla Model Y is Fremont built with NCA battery (vs NMC battery I had on my Tesla Model 3) that I drive mostly short runs, I charge it to 55% daily only. When I go in longer trips I charge it to 100% to allow the BMS to balance its numbers. I did charge it two times to 100% in the two months of ownership.
Teslafi shows today this :

 

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And now at 3 months ownership, the battery

And if I compute the values based on the Energy screen :

155 x 245 / 0,49 = 77,5 kWh

The drive above in Teslafi

 

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And now after 4 months of ownership :

Scan My Tesla shows the same steady 77.7 kWh battery capacity

And if I compute from Energy screen :
185 x 231 / 0.55 = 77,700 Wh

And with the cold weather coming, I am pretty impressed of its efficiency. And I wasn't shy while driving it on the highway.

 

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Wow thanks for sharing. So much math and statistics.

FWIW, the M3H RWD with 19" Nova avg 118wh/km per the computer since I got it on end June. Mix of city & hwy. My wife that drives it half the time treat it like an ICE vehicle. A/C and seat ventilation cooling on in the summer. Although she does drive in Chill mode.

Great efficiency on the 2024 Model 3 RWD Highland ! Unfortunately for me, the Model 3 ingress/egress and the lack of towing capacity were the two things that drove me towards a Model Y AWD. And the new suspension on the Model Y !

My daily usage is really very short and I am not really driving for efficiency (Normal mode and 21C Auto HVAC all year long). The above information is related to my Model Y AWD. After a year of ownership of a Tesla Model 3 AWD I had an efficiency of 166 Wh/km, this including the winter 2024. Which was pretty good, considering that my efficiency over 4.5 years of my Bolt EV ownership was 240 Wh/km. It is true though, I drove 5 winters in these 4.5 years of ownership and during covid times I drove less than 8 000 km/year and mostly during winter.

P.S. One thing you should absolutely do on your Model 3 : replace the mudflaps that came on your Tesla with one of these ones. For whatever reasons, Tesla decided to put crappy mudflaps on the Model 3 vs the ones on Model Y.

Model Y :

Model 3 :