Spanish Grand Prix
The first Spanish Grand Prix in 1913 was not actually run to the Grand Prix formula of the day, but to touring car rules, taking place on a 300-kilometre road circuit at Guadarrama, near Madrid, on the road to Valladolid.
Penske PC1
The first race of 1975 was the 1975 Argentine Grand Prix and Donohue finished seventh. Donohue retired from the Brazilian Grand Prix because of a handling issue. The South African Grand Prix saw Donohue finish eighth. Donohue retired from the Spanish Grand Prix when he and Alan Jones (Hesketh) crashed after hitting oil dropped onto the circuit by the car of Jody Scheckter (Tyrrell). The Monaco Grand Prix saw Donohue abandon the race after he had an accident. Donohue finished 11th at Belgium. The Swedish Grand Prix saw Donohue finish fifth. The American finished eighth at Holland. The French Grand Prix saw Donohue retire from the race due to transmission failure.