A Mechanical Breakdown is defined as the inability of a covered part(s) to perform the function(s) for which it was designed, due solely to defects in materials or faulty workmanship. Note: Mechanical breakdown (as defined by QualityGuard+Plus) does not include damage due to negligence, damage caused by an accident, or the gradual reduction in operating performance due to wear and tear. In addition, this plan does not provide any benefit for any mechanical failure or breakdown caused by a non-covered part.