You are really letting your intense hatred of Tesla make you totally irrational. I see it all over this forum in every thread you post in now. The premise of the original question was for cars where the battery has already failed and needs to be replaced. Is it worth the cost to do the replacement? And then you made the absurd false statement that actually putting in the money and doing the replacement to put in a new battery instead of the old broken one would make the car worth "LESS THAN ZERO"!
It's a shock that otherwise intelligent members of this forum are so utterly incapable of performing basic, simple mathematical calculations. KBB has my private party car value at $20,000 irrespective of battery age (that is not a valuation factor). Paying $22,000 to replace a failed battery on a car worth $20,000 makes the car worth... according to KBB and every other valuation site... $20,000. The most I will get back is $20,000 after making a $22,000 expenditure. That makes the car worth less than zero. In fact, that makes the car worth -$22,000 in my situation.
Funny how math works. If you can find someone who will pay me an additional $22,000 for my new battery, or $42,000 in total for my 2013 P85, then it would be break-even. But it's not. And it never will be. And people like you talk without any evidence, without any knowledge, and with only a single goal in mind: Blindly believing in Tesla.
The replacement cost of drive units and batteries is, to put it plainly, a crock of sh*it. $14k for a new DU and $22k for a new battery. Nobody but a select few can afford this out of warranty. Tesla is a money pit.
And
@TwistedGray rightly pointed out how insane that statement is. A car with a replaced good battery is obviously improved value over a non-working car with a failed battery.
Please tell us what a 2013 P85 w/ new battery is worth compared to a 2013 P85 with a functional, old battery. THAT is my dilemma and what I'm talking about. I don't care what you think I'm talking about or what you personally believe. This is about math and I'm sorry you are apparently unable to read. As far as all of my research is concerned, a car with an 8 year old functioning battery is worth the same as a car with a brand new battery. My particular situation is trying to decide whether to sell the car before an inevitable battery failure or chance owning it out of warranty.
If you have nothing to contribute, and it's clear you do not, consider keeping the pie hole closed.
And then you doubled down on it. Obviously doing the fix is very expensive and may or may not be worth doing, but it's indisputable that if someone put that money into it to do the replacement, the car would then be worth more in repaired condition than broken condition.
That's not what I'm asking and clearly you have no clue what concern you are actually attempting to address in your rude and condescending tone. Perhaps before you respond like an a** hat, try to take a few seconds to actually understand what I'm saying. Take off the Tesla tinted glasses.
It is unfortunate Tesla does not pay you to shill.