They do not do that often with brand new cars, they do it with cars that are in service and they have a reason to drive it. But as you said it's a dealer matter, choose your dealers wisely i guess :)
Printable View
It's in the range of normal. All the cars pretty much come with 30-70 miles. Higher miles does not mean that someone is or was wrong. Personally it doesn't bother me if its from the factory. Its all under warranty anyway. I wouldn't sweat it. Its a new car. Enjoy the tons of miles that will follow!