You mean you start the engine and the car was going in reverse only? I had an isue with my MP777 few months ago. Hear that, i crash my buggy on a wall (not hard, at about 20 km/h or less and in my surprise, when i was pressing the throttle, the car was moving in reverse but then it magically turn in opposite and was moving normally (front)) I don't know what happen with the gears or with the engine, you see, the car when it did all that it was 50 metres far away. TTO BAD, it was really fun indeed. I don't know what happen, can you tell me why it did that?