there may be another thread for this but i'll ask here. I have a april build 2017 90D ( not a P) , I think it is V3 if I am reading it right, its a lease and i'm thinking about buying ,it is essentially a new Car if I do the MCU2, HDW 3 change ( which I am thinking of doing) save the 90 Kw battery. is there any way to know how good the battery is / longevity etc. it would help me decide if I should just turn it in or not. A full charge still show the same miles when I got it so it seems to have not really lost any capacity but like anyone with an iPhone It is how fast it drops from there. I have noticed that I can't seem to go as many days percentage wise before it drop to time for recharging.
I ended up not buying my lease, even after I turned it in. The price was too high. The 90 battery isn't great it seems. The 100 battery is better for long term reliability.
If you are interested in gambling, at least back in 2018, I was able to return my lease and then search daily to see when it popped up in the inventory as a used car. My lease buyout price was $94k, which was insane. It ended up being listed at $80k and eventually sold at $71k. So, you can probably save if you return it and buy it back, if your lease price is higher than current used prices.