OMG, this was horrible to assemble! My Mother and I spent 2.5 hours trying to get the car together and finally had to use cooking spray to get the plastic pieces to fit. We are not engineers, but thought we could handle this project. We were vindicated to see we were not the only ones having trouble with assembly. Tears were shed.  I It is now greasy and my son will not play with it.  I am not making this up! He did love playing with his cousin's car, same model. Someday this experience will be funny.