Have a strange problem with my V3. It seems like it's sensitive to static discharge or something. Occasionally when I pick up the car and touch the speed control, the throttle goes dead. The ESC light blinks red, and it can't be turned off using the button. You have to unplug the battery to get it to work again.
Normally this is not a big deal, but tonight it cost me the main when a marshal touched my car.