| Built by: | Iso Marlboro |
| Active years: | 1974 (1) |
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| Rd | Date | Grand Prix | Driver | Team | Engine | Grid | Race | Pts |
| 1 | 13 Jan | Argentina | Arturo Merzario | Williams | Ford Cosworth DFV | 13 | Ret | 0 |
| 2 | 27 Jan | Brazil | Arturo Merzario | Williams | Ford Cosworth DFV | 9 | Ret | 0 |
| 3 | 30 Mar | South Africa | Tom Belsų | Williams | Ford Cosworth DFV | 27 | Ret | 0 |
| 4 | 28 Apr | Spain | ||||||
| 5 | 12 May | Belgium | ||||||
| 6 | 26 May | Monaco | ||||||
| 7 | 9 Jun | Sweden | ||||||
| 8 | 23 Jun | Netherlands | ||||||
| 9 | 7 Jul | France | Jean-Pierre Jabouille | Williams | Ford Cosworth DFV | DNQ | 0 | |
| 10 | 20 Jul | Great Britain | Tom Belsų | Williams | Ford Cosworth DFV | DNQ | 0 | |
| 11 | 4 Aug | Germany | ||||||
| 12 | 18 Aug | Austria | ||||||
| 13 | 8 Sep | Italy | ||||||
| 14 | 22 Sep | Canada | ||||||
| 15 | 6 Oct | United States |