The new car warranty is meant to provide the owner of the new car with an assurance, so to speak, from the vehicle manufacturer that his new vehicle is of the advertised quality.  Once the new owner takes the vehicle home and finds that it does not function as the manufacturer said it would, then he would be fully entitled to either have the manufacturer (or dealer) repair or replace the cause of the problem at no cost to himself, or he could opt to have his vehicle replaced with another.

Without the new car warranty, the manufacturer would in no way be responsible nor would he be held liable for anything that goes wrong with the car after its purchase.  It is very rarely the case however that a manufacturer would issue a vehicle without the new car warranty, for this is also the manufacturer’s way of assuring the public of the best quality vehicles that they produce, and by extension it is his way of marketing either his name or the vehicle type in question.  For the very reason also, most manufacturers pay careful attention to honoring the claims made by clients – so long as it is with reason.