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2021 Pre owned Model 3 Battery health

Select_Economics_407 | 2025-11-29 16:36 | 21 views

I recently bought a pre owned Tesla model 3 with 45,000 kms mileage in Canada. The dealership delivered the car with full 100% battery. I drove it to work about 75kms away in cold weather about -6 degrees and while returning back the expected battery percentage was showing 11% so basically drove for 150kms in a day and battery depleted rapidly. Is this normal. Should I trade in with dealership for another model 3 Please advise

Comments (23)
rex_regum 2025-11-29 16:39

You can look at the energy app on the center display to understand exactly why the vehicle used the amount of energy it did. There are a lot of factors you’re not listing here, so the short answer is: maybe.

jimmy9120 2025-11-29 16:41

Baby it’s cold outside

Itchy_Platypus4085 2025-11-29 16:51

Odds are this is normal. All depends on how you drove, the temperature, elevation, hills, wind speed etc etc You can run a battery health test but odds are its over 70%.

Mediocre_Paramedic22 2025-11-29 16:59

Depends a lot on how you drive, how fast, how hard you accelerate, how warm you keep the cabin. Are your tires fully inflated? The cold takes some additional energy due to heating and increased rolling and wind resistances. Your energy app can help give you insight as to where the power is going.

awm071 2025-11-29 17:21

I am from Europe but this week completed a trip of about 280km at -10 Degrees with a 2021 Tesla Model 3 SR around Edmonton. The trick is to pre condition the cabin and therefore the battery before you leave while the car is still plugged in. Even a standard 120V 12a Socket is better than nothing. Otherwise the car needs to heat up the cabin and the battery if the car is cold soacked eating up the range.

beanpoppa 2025-11-30 01:37

Change the display from percent to kilometers. Compare the kilometers displayed at a full charge to what the range would be when the car was first sold. The mileage (kilometerage?) displayed is basically the EPA rating multiplied by the BMS's value of the total charge in kWh. Unlike EVs from other manufacturers, the kilometers remaining displayed is not based on your driving habits.

sparkyblaster 2025-11-30 02:18

Did the 2021 have a heat pump in north america?  I guess even if it did, you're below freezing which is where either system is going to struggle

Omacrontron 2025-11-30 19:45

My fault for opening Reddit today.

Select_Economics_407 2025-11-30 23:49

Yes I checked the energy app. For a 50km trip theres a +10km for Battery conditioning and -6.6km for driving and +1.7 for climate so effectively 5km more than rated. I think the cold weather is draining the battery then.

Select_Economics_407 2025-11-30 23:50

Is over 70% really the benchmark for a 4 year old Model 3?

Select_Economics_407 2025-11-30 23:50

Sure will do and monitor

Select_Economics_407 2025-11-30 23:52

Yes I checked there was a significant consumption for Battery conditioning

Select_Economics_407 2025-11-30 23:54

Yes my 2021 Model 3 has a heat pump.

Itchy_Platypus4085 2025-11-30 23:55

For the warranty to kick in for replacement. You're probably at 80% to mid 80s% battery health or something along those lines.

Select_Economics_407 2025-11-30 23:57

Understood. I am looking to do a battery health test to know the exact percentage.

Itchy_Platypus4085 2025-12-01 00:17

If youre looking to get the rated efficency, that won't happen. In the US the epa number for my car is 333 miles. I get maybe 250 miles in spring/summer when the temps are ideal. There's a lot of fluff in the stated numbers and reasons why you'll get X.

CopperBlitter 2025-12-01 12:25

Yep, this is the way.

OldFargoan 2025-12-04 00:39

Might want to do a battery health check. When I bought mine used it would tell me my battery was practically dead even though I'd only used 50 KW or so. After draining it all the way down and doing the battery health test it was much more accurate.

Select_Economics_407 2025-12-04 01:15

I have scheduled the battery health test for this weekend. Cant do it on weekdays as it takes about 24 hours

OldFargoan 2025-12-04 02:20

You have to get the battery down as low as you can before the test. Otherwise most of the time is basically just it draining it down again.

Select_Economics_407 2025-12-04 02:54

Yep got it, I think the car mentions the battery should be below 20%

silent_20 2025-12-20 17:57

Did you do the test?

Select_Economics_407 2025-12-20 18:27

Yes buddy, the battery health is at 86%

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