Kammala wannan jumla: McLaren ya fara shiga gasar tseren Indianapolis 500 na United States Auto Club (USAC) a cikin
1970, wanda mai samar da tayoyin Goodyear ya karfafa shi, wanda yake so ya karya abokin hamayyar Firestone a kan lamarin. Tare da motar M15, Bruce, Chris Amon, da Denny Hulme sun shiga, amma bayan Amon ya janye kuma Hulme ya ƙone sosai a hannun a cikin wani abin da ya faru a cikin horo, Peter Revson da Carl Williams sun ɗauki matsayinsu a tseren don yin ritaya da gama na bakwai, bi da bi. Har ila yau, tawagar ta yi gasa a wasu daga cikin tsere masu daraja a gasar zakarun Amurka a wannan shekarar, kamar yadda za su yi a cikin shekaru masu zuwa. A shekara ta 1971 suna da sabuwar mota, M16, wanda direba Mark Donohue ya ce "... ya tsufa kowane mota a kan hanya... " A Indianapolis 500 na wannan shekarar, Revson ya cancanci matsayi kuma ya gama na biyu, yayin da a 1972, Donohue ya ci nasara a cikin Team Penske's M16B. Taron 1973 ya sami Johnny Rutherford ya shiga ƙungiyar; ya cancanci a kan pole, amma ya gama na tara, Revson ya fadi. McLaren ya lashe Indianapolis 500 na farko a 1974 tare da Rutherford. Haɗin McLaren da Rutherford ya kasance na biyu a 1975 kuma ya sake cin nasara a 1976. An yi amfani da ci gaban M16 a duk tsawon wannan lokacin har sai an gabatar da sabon motar M24 a 1977. Teamungiyar ba ta sake yin nasarar nasarar da suka samu a Indianapolis a 1977, 1978, ko 1979, kuma kodayake sun ci gaba da cin nasarar wasu tsere na USAC, a ƙarshen 1979, sun yanke shawarar kawo ƙarshen shigar su.