Brabham-BRM
Jo Siffert terminou em P12 no Campeonato Mundial de 1965 com 5 pontos. Em 10 corridas: 0 vitórias, 0 pódios e 0 pole positions — melhor resultado P4.
| Round | Race | Team | Grid | Finish | Points | Status |
|---|---|---|---|---|---|---|
| 1 | South African Grand Prix | Brabham-BRM | 14 | P7 | +2 Laps | |
| 2 | Monaco Grand Prix | Brabham-BRM | 10 | P6 | 1 | +2 Laps |
| 3 | Belgian Grand Prix | Brabham-BRM | 8 | P8 | +1 Lap | |
| 4 | French Grand Prix | Brabham-BRM | 14 | P6 | 1 | +1 Lap |
| 5 | British Grand Prix | Brabham-BRM | 18 |
| P9 |
| +2 Laps |
| 6 | Dutch Grand Prix | Brabham-BRM | 10 | P13 | +25 Laps |
| 7 | German Grand Prix | Brabham-BRM | 11 | P10 | Engine |
| 8 | Italian Grand Prix | Brabham-BRM | 10 | P17 | Gearbox |
| 9 | United States Grand Prix | Brabham-BRM | 11 | P11 | +11 Laps |
| 10 | Mexican Grand Prix | Brabham-BRM | 11 | P4 | 3 | Finished |