Just Mugen haters wanting to bash on the product. Seriously, while all the racers around me in my area change cars to get the latest, greatest, I have been running my MTX4 since just after it came out and my expenditures have been tires, a few parts, a couple of OS engines, and a few bodies. That is a lot less than a $350+ car kit every few months along with the tires, bodies, parts, and engines. And, I am still just as competitive with the other cars without all the added costs of switching cars and having to relearn the car and develop new setups for said car (reliving the learning curve for each new car).