One of the best tricks I have employed whenever I help find someone a used car is take a mechanic with me. Not only testing is made easier, but you can also figure out if the car has any underlying problems. An expert of Auto For Trade suggests that the reason you should focus on performance when buying a used car is because while you can fix problems with the exterior, the inner problems of a car may come expensive. That is why it is important to ensure that the car has no problems with things such as engine, transmission et cetera. Do you agree?