 Nyora kupfuurira kweiyi ndima - Penske akapinda muFormula One World Championship kubva muna 1974 kusvika muna 1976. Kunyange zvazvo motokari dzacho dzakavakwa pachiteshi cheBritain muPoole, chikwata chacho chaiva nerezinesi rokuAmerica. Muna 1971, Penske akanga atsigira kupinda kwechipiri kweMcLaren mu1971 Canadian uye US GP, kupinda Mark Donohue, uyo akatora motokari kusvika pakuguma. Chikwata chakadzoka makore matatu gare gare, muna 1974 Canadian GP, ine chassis yavo pachavo, PC1, bhavhu rakajairika rakavakirwa painjini yeCosworth DFV uye giya reHewland. Donohue akaendesa motokari yacho kunzvimbo yechi 12 pakatanga. Muna 1975, Roger Penske akatasva mwaka wose achirwisa nePC1, Donohue achikwanisa kuwana nzvimbo yechishanu muSweden GP. Zvisinei, motokari yacho yakabviswa mushure meFrance GP uye Penske akapinda muna March 751 nokuda kwemakwikwi matatu anotevera, achiwana imwe yechishanu muBritish GP. Zvisinei, Donohue akarovera motokari yacho mupurogiramu yokupedzisira yokurovedza ye1975 Austrian Grand PrixpaSpielberg uye gare gare akafa nokukuvara kwake. Penske akapotsa mujaho weItaly, achidzoka chete kuUS GP, achisiya March 751 achitsigira PC1 nemutyairi weNorthern Irish John Watson. 