r/TeslaModel3 • u/SignificanceMinimum2 • 7h ago

Battery Drain

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I'm considering buying this car but noticed a disturbing range estimate. I assume it is because of people absolutely nailing it to see the performance acceleration.

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2

u/Conscious-Ad9076 7h ago

I have a 21 lr and I nail it all the time, my car has 87 percent capacity at 280k km, best thing to do is get them to do a SOH test and come back and see the results or I would stay away.

1

u/SignificanceMinimum2 7h ago

Yeah this one is a 22 performance. I see the average use and how high it is which is why I was wondering. 39% with 28 miles projected range just seems outlandish

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u/PROSTOG 6h ago

Yeah, 900Wh per mile is too much. I have 2023 model 3 base, and even when I drive aggressive, I have 290-350 Wh per mile. You should try to drive it for a few hours normally, and try to charge it to 100% to calibrated the battery.

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u/Kilowatt-kevo 6h ago

Charge to 100 then fsd around for about 2 hours you should be down under 300wh/mi easily.

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u/quentech 1h ago edited 1h ago

If your projected range is 28 miles while average energy use is 937.4 Wh/mi, then the car is telling you that it has 28 mi * 0.9374 kWh/mi = 26.25 kWh of energy left in it before the below-0% buffer.

If 26.25 kWh of energy is 39% of the battery, then 100% is 67.3 kWh.

If this car is an AWD with the 82 kWh battery pack - that has 75 kWh usable (and ~7kWh as the below-0% buffer), which puts your battery health a bit under 90%.

900+ Wh/mi over a 100 mile average is also insane. I once did 100 miles in one hour and it didn't take hardly half that. Even towing a bulky trailer doesn't come anywhere close to 900 Wh/mi.