Similar story to share when I got my brand new Colt a few years back. A chap in the traffic called me at the robot to tell me that one of my rear wheel nuts was missing. I thank him and carry on for about a Km, to meet with the sales lady as they forgot to give me my service book.
I get there and as she arrives, i show her the missing nut. I then take a wheel spanner and with her, check the others... low n behold, all loose
Not cool....