Some background first:
Somebody at another forum was really angry because the cabin filter in his brand new Hyundai was missing. He searched other Hyundai cars too, and the filter was missing from them as well.
That sounded strange, but somebody found the answer here: http://www.hmaservice.com/webtech/iindex.asp?id=394890134#_394890134
Apparently, most Hyundai cars can take a cabin filter, but it is factory installed only in the more expensive models.
You might think that this was the end of it, but no! The Hyundai owner was now even more angry! He said that a car that has no cabin filter is unacceptable at this time and age, and that there was some kind of fraud. I told him that it would be a fraud only if a salesperson had told him that a cabin filter was installed while it wasn’t. In his case, nobody told him about a cabin filter; he only assumed its existence.
This didn’t make hin any less angry though! He told me: “What next? One wheel missing? No gearstick? All these things are implied too”
That got me thinking: At what extent do manufacturers have to document the product characteristics? Obviously, creating a list of every nut and bolt of a car is useless for 99.9% of car buyers. Service manuals have this kind of thorougness, but it is irrelevant for Joe Car Buyer. What is the legaly minimum information that a manufacturer has to make available to a buyer?