Cika wannan jumla: 1979:
An shirya Monaco Grand Prix da Indianapolis a rana ɗaya, saboda haka Mario ya tilasta tsallake Indianapolis 500. Wannan shi ne karo na farko da ya rasa tseren tun lokacin da ya zo a matsayin rookie a 1965. A cikin shekaru goma na 1970s (1970-1979), Mario bai sami damar jagorantar zagaye ɗaya a cikin 500 ba.