I don't know where you live but the place where I live (lahore), it is impossible for any car to stay "total genuine". All cars older than 5 years are repainted somehow at dents or at least their bumpers are repainted. Here bikers are the main reason for dents and scratches. In hurry at signals, they will slide along your car body damaging its paint. Besides, car engine wears out, sensors damage, hoses rupture, water body leaks and so many other problems arise over time. So if someone sells his car saying "total genian" he is a bloody liar. This nation always sells its crap with lies.
My own car bumper is full of scratches and there are two dents on left panel which I will definitely get repaired and get the car repainted at those spots plus bumpers require complete paint job. Now I am soon going to change its complete assembly. So when I will sell it I won't use the term "genuine". No it is not despite of Japanses parts that I always use. I would sell it for little loss but that is better than lying and then curses of buyers.