But, that is NOT true. If you had said, 'Tesla isthe only one that immediately posts publicly all price changes' that would have been true.
In fact, virtually all OEM's practice, other than Tesla, is to have some public and some secret discounts from normal prices that are called incentives and most such, in the US, are published in the dealer and OEM industry paper, Automotive News, with comprehensive list in the back pages that include both dealer and consumer incentives. Even there some common ones are not always shown, including inventory subsidies (i.e. Floor Plan), F&I subsidies (aka Spiffs) and others. None, repeat none change the MSRP because MSRP is, by definition meaningless (the S is Suggested). So, dealers sell above MSRP if they can, pad the quotation with largely useless dealer additions etc.
Tesla, by contrast is WYSIWYG, and acronym for full clear disclosure.
There is a notable side effect of WYSIWYG that is using some consternation mostly among the less experienced new vehicle buyers. Almost always a vehicle titled immediately loses at least 25% in initial purchase price, reflecting dealer margin of 10-15% or more, taxes, delivery fees and so on, explicitly including poorly or non-disclosed finance margins. That last generally makes more money for dealers than does the original transaction.
Tesla does none of those things. Oddly, people who notice huge cost of depreciation usually concentrate on Tesla because MASRP IS transaction price. The same people experience the same actual impact from dealer-sold vehicles, but seem not to notice so much as they do with Tesla. In large part that si the result systematic obfuscation by dealers and collaboration by OEM's own self-interest.
Many of us were spoiled for the early years when demand vastly exceeded supply and used cars sometimes were more expensive than new ones. That once happened with even early Honda Accords (I bought one after a year-long waiting list and sold it at a profit on delivery, I never actually drove it. Then BMW 3 series in late 1970's, much the same. Quite a few other examples happened, many during the COVID-19 pandemic. They are vanishingly rare now, when prices are dropping.
I'm not thrilled that my 2021 Model S Plaid is worth 40% of my purchase price, but, to be honest, I really expected it. After all they were soon to become plentiful.
Really it is painful for so many people to misunderstand the nature of auto purchase.
Last critical point: Dealers understand how psychology works so the routinely inflate trade-in value while adding the variance between wholesale retail value and that trade-in to F&I margins with dealer adds, extended warranty etc. BTW, typical dealer add for extended warranty is >100& in the US. It is always a rip-off.
So, please stop with portraying Tesla as somehow deficient in treatment. They simply do not engage in those deceptions.
Thank direct distribution for lower cost and open disclosure. We should be grateful not disdainful!