MarylandPaul wrote: ↑Sat May 28, 2022 2:15 pm
Apologies if this was already asked/answered but my search did not find it.
Wanted to know whether the battery 8yr/100k mi warranty is transferrable to owners buying used? If it matters, I live in MD and would purchase in MD/VA/DC.
I just test drove a 2015 base and the fully charged I3 was at 45 miles and my test drive up and down the street around the dealer dropped it to 39 miles even though it couldn't have been a mile. I did have the A/C on to test it out. I walked away from the purchase because I was hoping for at least 60 miles on a full charge. If I were to gamble and purchase the I3 I wonder if I could get the battery tested for the warranty ... likely I am dreaming but I have been looking forward to get an EV as sharp looking as the I3. Very jealous of you folks!
As a used i3 buyer myself, one of my assumptions was that the battery warranty did transfer. I've read multiple references indicating that in the US it is federally mandated that EVs have an 8year, 100k mile warranty on defects (which is why US i3s use 100k miles instead of 100km), however it is shockingly difficult to find this documented.
This article references it, https://www.findthebestcarprice.com/hyb ... %20first).
But this article from energy.gov doesn't mention the federal mandate:
https://www.energy.gov/eere/vehicles/fa ... ears100000
Additionally, a 'capacity guarantee' is not
part of any required warranty as I understand it, so BMW voluntarily chose to guarantee 70% capacity.
However, their goodwill ended there because if you search around you will find all sorts of... "shenanigans" when it comes to determining whether a car is below the 70% threshold. Only BMW can definitively say whether a car is above or below the threshold that will cost them a lot of money which is suspicious to say the least.
The car you drove that indicated 45 miles of range (out of an 81EPA rating when new) might be at 45/81 = 56% capacity BUT:
1) recent drives may have been very inefficient, so the car is saying it can't go very far on a full charge because every time someone gets in they put the AC on full blast, drive it around the block, then park it so the cabin gets hot again but they never covered much distance. If you want a true estimate of the range, you'll need to drive it for 20 ish miles or more
2) It's also possible the car's battery is around 70% true capacity but the BMS is sandbagging and limiting it to something very low. People (myself included) have benefited from asking the dealer to do a capacity test which usually requires updating the software on older cars. Something in the test process, or the software update seems to do something that adds range to many vehicles.
If you have any sort of bargaining power in this deal, I would ask the dealer to do a capacity check, and provide you with a % of where the battery is at (including asking what i-step software version the car is on which will force them to tell you if it's recently updated or very old) Then, if the capacity is above 75%, I'd take it for another 20+ mile test drive and see if the real world range is closer to what you'd need.