And who wants to buy a used Tesla (or any EV) even if the price was competitive?
The range degrades with the battery and replacing it costs more than the car is worth.
If we naively assume that every 21k miles driven drops 1% of capacity, then after another 1 million miles I'll be at 50% capacity. That'd still give me 4x the range I need on a daily basis.
Even if the rate of degradation were 2-3x my estimates, the battery in my car is more likely to allow my car to drive further than even the most babied, well taken care of, internal combustion engine ever could.
As far as we know, the original battery pack had an issue after 290,000 km (180,000 miles) and was replaced under warranty. However, Tesla was initially figuring out the issue and installed a loaner battery, which was used for half a year or 150,000 km (93,000 miles). Then, Tesla installed a new, final battery. We don't have any info about any further replacements, so it might be the first 1 million km battery?
In terms of drive units. The Tesla Model S P85 is a single-motor, rear-wheel-drive car. High power and torque was an issue in the early Teslas, which caused a few motor replacements. Three units were replaced by 680,000 km and the fourth one was running up to 1,000,000 km. We don't have any info on whether anything happened after that.
For reference, that famous million mile Tesla went through three batteries and eight motors [1].
[1]: https://thedriven.io/2022/06/15/tesla-model-s-owner-passes-i...
IIRC, one of the big reasons Teslas are comparatively expensive is because their batteries are gigantic relative to their range. They're basically using a lot of energy from the battery to power cooling systems to keep the battery cool, which means they degrade much more slowly.
You can look up user-generated plots of average battery degradation and see that most Teslas still have 90% of their range after 100k miles.
Other cheaper EVs manage this equation differently and their batteries do degrade more quickly.
