Mine had 22 miles on it .... but that was down to them fitting and testing the cruise control - which seemed reasonable given it didn't work to begin with and they had to go out twice !
Dealer also said engine is run in prior to delivery and not to be too gentle with it ... though he stated the 'recommended' method almost word perfect from the handbook. He said the run in period is more for the rest of the car and the gearbox / brakes / suspension to settle in.