When you purchase a car and finance any of the cost, you will have to change your Insurance Policy to reflect the lien holder.  You will also have to make sure that you have full coverage instead of just liability because your lien holder will require it.  This means paying extra for things like collision and comprehensive coverage.  Collision coverage covers you in case you are in an accident.  That is obvious by the name.  Comprehensive coverage is for anything else.  For instance, if your garage collapses or your car is stolen, comprehensive coverage can pay for these types of damages.  Full coverage is always a good thing.