[dvd3500]

Virtually zero quality control problems.

I wouldn't go that far.
On the German language forums and the stuff I see on shelves there are sometime problems, usually with the paint.
For example we had to go through 4 Huracan to find one whose windows and paint were fine. Some of the ventilation on the back was warped on others.

Others have been complaining about problems as well.

Still, I have not seen many problems with swapped wires, warped axles etc.

The tires are tuned to Carrera track with magnets which is very different to running on any other surface...