The wheelbase is here perfectly, as with the old cars of the past. Whether curve, looping or ramp - the car brings the power optimally to the train and not be thrown out. But the engine is just as crappy as with all other models. After 5 to 10 rounds the first Zahnradzähnchen have broken, or the spring slips. Who wants to play more than 15 minutes so that, should equal mitkaufen several spare engines and then complain all defective parts immediately, so that times change something about the quality. Because the Dardabahn itself is like in the 80s still great !! Super funny and indestructible. Hopefully soon there again stable engines, so have as much fun with the train my children as I can.