It would be great if we could start discussing real prices, maybe agree on an average sales tax rate which can be used in most discussions, with the understanding that it will vary a bit for you. Or maybe just add a 10% flat sales tax estimate, so that at least you know that most of the time you can expect to pay slightly _less_ than the discussed price, versus the unpleasant surprise of thousand(s) of additional $.
I wish the US could suck it up and have correct price labelling. I don't care if they relabel products and it varies location to location or if the price is the same nationally and varying amounts get skimmed out (like credit card fees).
Last time I went to buy one, the local Honda dealer tried to rig up a deal where a 2-yr-old model listed at $11k would cost me $19k. They were willing to budge on one of the $2k "mandatory" upgrades that weren't in their posted price, but I walked on the deal.
I think slightly older used cars can usually be had pretty reasonably though and can be a nice way to break out of the car loan cycle (if you can budget $1k cash for the likely event where there are hidden problems). The end of that story is that I bought a 10-yr-old Honda Fit for $5k, they didn't try any manipulative sales tactics, and 20k miles later I haven't had any notable issues (ran over a couple nails and needed to plug the tire). That's still a lot of money at minimum wage, but it's a lot more manageable than a new car.
The used car market used to be fantastic before the 2009 Cash For Clunkers system seemed to have skewed it. It doesn't look like it has "recovered" but that could be due to other factors like better reliability overall. I mostly used a new car as a worst reasonable case scenario where the price doesn't fluctuate.
[1] https://www.insurance.com/auto-insurance/coverage/comprehens...
I do think most people buy way more car than they need, which drives up all sorts of costs. If you can get out of the car loan cycle it's incredibly freeing. If you have a solid driving record and an emergency fund you can drop collision on your insurance (it's required if you have a loan) and save a few hundred each month to put towards your next car.