The team's sole driver, John Watson, qualified the new car 17th on the grid[1] but crashed on the first lap of the race when its throttle became stuck.

[6] Penske withdrew from Formula One at the end of the season, the team opting to focus on Indycar racing.

[3] German industrialist Günter Schmid brought the Penske PC4 chassis for his newly formed ATS Racing team, set up to participate in the 1977 Formula One season.

The team expanded to two entries later in the season and Hans Heyer made a one-off appearance in the German Grand Prix, famously driving despite failing to qualify.

[4] Ted Field's Interscope Racing ran a PC4 for Danny Ongais at the tail end of the 1977 season.