It is completely possible to finance a used car in Montclair, Ontario California; however, it might not be the best idea for everyone. But financing is something, which is up to you, new car or a used one. All in all, if one wants to purchase a used car, one's best bet is to pay in full when one can. It should be very clear that not all financing deals go as per one’s wishes. Sometimes the deals you make, backfire. Sometimes, these financing deals work.