What chaps me is my 5.2 second NEW car has just been depreciated an extra $5-10K. Computers and phones don't introduce upgrades several times a year. With Tesla, no one knows when the year end is. Plus, I'm still waiting on my EAP to work as advertised. They dated my car before they finished delivering it.
That depreciation would have occurred whether the performance improvement was delivered now or a year from now. It only makes a difference if you were to sell the car now. I think the depreciation is realized at the time of sale (or the time of loss if it becomes an insurance claim issue).
If you choose to sell the car now in order to purchase a newer one with the 4.2 second 0-60 time, then that full depreciation would be realized.
That depreciation amount, if accurate, will be incorporated into the total depreciation so should ramp down in importance as the car ages and the age of the car becomes the prime determinant of total depreciation. Suppose there is a 10% value loss now, say $7500. When the car otherwise depreciates to half its value, that absolute loss in value will be reduced to half as well. So if you were to sell now and saw a $7500 additional depreciation loss, when the car is otherwise worth half as much, I would expect that additional depreciation to be $3750 or possibly less. It is still a bite but the importance of it should decrease over time.
Say the "half value" occurs in 5 years, for example, and say that is the time you trade the car. I believe the additional $3750 in depreciation would have occurred if the performance increase had happened at any time over that 5 years. So that depreciation isn't linked to the frequency of hardware/performance upgrades.
I agree the timing is annoying and I wish I'd waited another month or two before buying, but mine is still an awesome car.
There is some question whether our version can realize some improvement. I saw a post about a left over screen displayed on a new car, it seemed to indicate a factory test in which the power output was significantly higher. We probably have software limits reducing performance. I hope those limits will be relaxed.
Then there is the 1 foot rollout issue. As I understand it, all the current test results include a 1 foot rollout before they start the "0-60" time. So the 5.2 and 4.2 second times are invalid. They are more like 5-60 MPH results. There is still a performance increase but it is not the 1 second they are saying. A true 0-60 time will be significantly longer for both, our cars and the improved cars, but the inappropriate use of rollout in 0-60 testing clouds the actual degree of improvement. Right now it is being presented as a (5.2 - 4.2)/5.2, or a 19.2% performance improvement. The actual improvement will be less than 19.2%. Until someone does some accurate testing without that silly rollout, we won't know the actual improvement.
As far as the EAP goes, I pretty much knew the status when I purchased. I had a pretty good idea that EAP would be fairly slow in getting to the final version with all the features promised. It is improving in just the time I've had the car. I like the EAP even as it is. I think there are other cars currently that are nearly equivalent but I expect the Tesla version to continue to improve while the other cars if purchased at the same time wouldn't continue to improve.
I think we are on the same side here. We'd both rather have waited and we both were unlucky enough to get cars made just days before a significant improvement. I am annoyed as well. I didn't see it coming. I think the only place we might disagree is on the importance of the improvements.
Recognizing that Tesla has a marketing driven problem in providing accurate 0-60 times Is important because it artificially inflates the percentage improvement from the recent performance changes. It also means no current S75D can actually go from standstill to 60 in 4.2 seconds. And if rollout was used when timing our cars, that 5.2 seconds is unrealistically optimistic as well. The best scenario for us would be if rollout was used in the timing of the 4.2 second cars but was not used in the measurement in the 0-60 times for our cars. I'm not sure but the rollout issue became a real marketing thing when the P100D started using inappropriate rollout numbers to get those 2.3 second times. That has been relatively recent. So there is a remote possibility the touted 0-60 performance improvement is largely more marketing smoke and mirrors.
I could be wrong, though. I've been wrong before.