We bought our son the grey mercedes 6x6 last year for his birthday, we originally got him the Dune Buggy but returned it because it had issues. So we bought him the 6x6, love the look and detail on it, but the way the motors are designed for the wheels are very poor, constantly making a grinding noise like how the Dune Buggy we first originally bought. Now while using the controller with my son it, holding the joystick up to go, it would regularly come to a stop jerking my son's neck which could cause issues. After coming to a stop when I push the joy stick up to go it won't go or would have a delay so you have to fiddle with the joy stick. For the price I paid for this I would expect better quality, I reached out to Kyle at voltz toys and haven't heard back from anyone. These are 2 serious issues that make the 6x6 non enjoyable for my son now.