Over the course of its extensive manufacturing history, Hero MotoCorp has phased out several older motorcycle models and variants to make room for updated, fuel-efficient, and emission-compliant vehicles adhering to shifting regulatory norms. Notable discontinued nameplates or specific engine iterations include older models like the Hero Honda CB ZMA (Karizma), Impulse, Achiever, Passion XPro in certain older trims, and various early-generation carbureted commuter motorcycles that were replaced when stricter Bharat Stage emission standards came into effect across the Indian automotive market.