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M3 AWD Rated Mileage
- Thread starter vipros
- Start date
pcons
M3 AWD+
The only way to really know if the battery is degrading is to have Tesla run diagnostics on it, or drive the same route from full charge and see if you get the same range or not. This is the 'method' people with lower range cars like a volt would use to determine if their range loss was 'real' or related to external factors like weather, road elevation changes, or driving style.
As you can imagine, even in a volt with 80-100km of range its a difficult test to run in a controlled fashion. In a model 3 I expect it would be next to impossible, unless you hop on your local high school running track and circle it a few thousand times
The range estimate is just that, an estimate. You cant treat it like it has an accuracy of a few percent. Any car is the same if you think about it. If you filled up your ICE car and it estimated 550km to the full tank, but you ended up getting 520km would you say the motor is degrading? In that case, the car would re calculate the efficiency based off of recent driving and adjust the estimate accordingly.
I'm not trying to be dismissive, or argumentative. Just trying to put you at ease. The battery is 99.9% fine. And if something is wrong with it, you still have 7.5 years and 191,000 km of warranty from Tesla on it
The battery is probably fine; if not, with a this trend of 0.8% loss per day, I can easily get Tesla to replace it in three or four months when the meter shows 0 km after 80% full charge
The real question is why we see such behavior ... is it really related to environmental parameters or what triggers the software to put a such limit? Tesla won't tell us for sure; the only way to find out is to apply Tesla's NN method
By the way, my ICE cars always get the same fixed number range once the tank is filled up regardless winter or summer. The only difference is that in winter the remaining number drops quicker than in summer. This is common sense in ICE but obviously wrong in EV.
The real question is why we see such behavior ... is it really related to environmental parameters or what triggers the software to put a such limit? Tesla won't tell us for sure; the only way to find out is to apply Tesla's NN method
By the way, my ICE cars always get the same fixed number range once the tank is filled up regardless winter or summer. The only difference is that in winter the remaining number drops quicker than in summer. This is common sense in ICE but obviously wrong in EV.
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What is the easiest way to monitor your mileage? I have a couple little kids and don’t have time to keep a logbook or build a spreadsheet. Is there a way through the Tesla app or the car directly? And are all of the calculations above based on uncertain/unverifiable assumptions about what a certain battery percentage or km range estimate equates to?
I think most people are just setting the charge limit and seeing how many KMs they have listed in the morning after charging. One potential issue with this method is the calculations for determining the displayed range and the charge limit may be different, so it could show a discrepency.
I actually think the projected range displayed in the enery view is much more interesting anyway... And likely much more accurate.
5_+JqckQttqck
Active Member
Just do a check every month; bring the car down to less than 20% and charge to 95% - the last 10% takes forever and I never see the car past 470km. And charges after that to 70 (~349) / 80 (~399) / and 90 (~449). My car was giving out ~336 at 70% setting for a long while until I did the low SoC to ~95% recalibration charge.
5_+JqckQttqck
Active Member
Winter's coming , 20% used to heat pack with charge rate of 39km/hr vs normal of 47~50km/hr
, 20% used to heat pack with charge rate of 39km/hr vs normal of 47~50km/hrMine was going to 441 or 442 at 90% the past 10 days. After a software update today it went to 448 at 89%.
Also do you mean you switched it from km to percentage and back to km?
I switched back to km to check the range and switched again to battery icon - the key is to keep the battery icon when the car is being charged. By the way, I didn't see the improvements from 36 to 39.7, or from 39.7 to 42.3.
Whisky
Member
The km range your on your panel next to the battery is the EPA rated range, and does NOT take into account driving style, weather, or whatever-else.
The video above nails the latest logic from Tesla, which has changed over the years. Charge to 90% daily. If you charge to 80%, you will lower your range because the car won’t realize how much battery capacity it has. It’s fixable by charging to 90%.
So charge to 90% daily, and once every two or three months, do a 100% charge just before a drive. You’ll be great.
The video above nails the latest logic from Tesla, which has changed over the years. Charge to 90% daily. If you charge to 80%, you will lower your range because the car won’t realize how much battery capacity it has. It’s fixable by charging to 90%.
So charge to 90% daily, and once every two or three months, do a 100% charge just before a drive. You’ll be great.
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