feelosofer
#ninergang
None of what you're saying is upholdable in court unless it's on your purchase agreement. The contract a dealer makes you sign will typically say you're buying a used car "as is". You could buy that car and the engine could explode as you drive it off the lot and if you signed the paperwork it's yours the end. There's usually a list of things that can go wrong with a car they give you as well and on the back of a purchase agreement it will say you read that and understand it.
New cars at least have lemon laws. Used cars in the United States are mostly as is. The only power you have at a dealer is before you sign a purchase agreement.
it may be a state thing NJ Auto laws are probably some of the strictest in the country, if the car is less than 7 years old and has less than 100k miles on it, you still get a 30 day warranty on the power train at minimum. I bought my daughter a used Nissan Murano some years back and the transmission fell out day 29, Nissan put a brand new trans, dealer paid the invoice.