When I was adding the MDX to my insurance (before picking it up), they asked what the mileage was. I hadn't seen it yet, but I guessed 20 miles, since it just came off the truck. When I got there it had 19 , which seems high compared to yours. I thought they drove it more than that after it came off the line. Are you sure they were finished with yours? Does it have all its parts?
Once my sales man told me the car is unloading from the truck, I rushed to the dealer and check it out. It had 6 miles before they do anything. When the time I pick up the car that night, it shows 7 miles. I know they have to bring the car into the shop to do the inspection, security setup, and clean up the car.
This is about the same milage I have on my previous car as well.