Exhibition of car letters

Hello guys, I would like to know what the general public (that is, you) thinks about it, 1. when a letter is issued for a car, 2. what the date of the manufacturer’s certificate (old letter page 4) means for you 3. what reasons there may be a new letter issued 4. whether a second original letter !!! (no replacement letter) may be issued by the manufacturer for updating reasons (burden to the combined vehicle without technical changes), at a Fa 5. How much km a car should have at most, which was delivered by the manufacturer to the dealer, as newly produced understands itself Unfortunately we have had such an experience, which justify these questions. We have been lying for some time, with this car in court. Before 15.10.2003 we bought a new car and only after 2 years found out that it was already 21 months on sale. Now we have to prove Arglist of the dealer, who is natural If our complaint is dismissed, I will write a detailed report on it. At the moment, I was interested in your opinions on the questions.