Jo Siffert race record
| Grand Prix | Date | Team | Grid | Finish | Pts |
|---|---|---|---|---|---|
| Mexican Grand Prix 1966 | 23 Oct 1966 | Cooper-Maserati | 11 | Suspension | |
| United States Grand Prix 1966 | 2 Oct 1966 | Cooper-Maserati | 13 | 4 | 3 |
| Italian Grand Prix 1966 | 4 Sept 1966 | Cooper-Maserati | 17 | Engine | |
| Dutch Grand Prix 1966 | 24 Jul 1966 | Cooper-Maserati | 11 | Engine | |
| British Grand Prix 1966 | 16 Jul 1966 | Cooper-Maserati | 11 | Not classified | |
| French Grand Prix 1966 | 3 Jul 1966 | Cooper-Maserati | 6 | Fuel system | |
| Belgian Grand Prix 1966 | 12 Jun 1966 | Cooper-Maserati | 14 | Accident | |
| Monaco Grand Prix 1966 | 22 May 1966 | Brabham-BRM | 13 | Clutch |