A 2015 CX5 spark plug is one of the most crucial ignition components, as it uses electric current to combust gas and rev the engine in turn. This electrode material is necessary for proper operation, and if it is worn, the vehicle may stall, struggle to start, or experience engine misfires in cylinders. Browse our selection of 2015 Mazda CX5 spark plugs from trusted brands and buy the right one for you.