| «1985-15» | South Africa Grand Prix - XIX Grand Prix of South Africa |
| 1985-10-19 | Kyalami - 75 laps × 4.104 km : 307.8 km |
| Pos | Grid | Car | Driver | Constructor | Laps | Time / Gap | Interval | Points |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 5 | Nigel Mansell | Williams • Honda | 75 | 1:28:22.866 | 208.959 km/h | 9 |
| 2 | 3 | 6 | Keke Rosberg | Williams • Honda | 75 | +07.572 | +07.572 | 6 |
| 3 | 9 | 2 | Alain Prost | McLaren • TAG Porsche | 74 | +1 lap | 4 | |
| 4 | 16 | 28 | Stefan Johansson | Ferrari | 74 | +1 lap | 3 | |
| 5 | 11 | 17 | Gerhard Berger | Arrows • BMW | 74 | +1 lap | 2 | |
| 6 | 10 | 18 | Thierry Boutsen | Arrows • BMW | 74 | +1 lap | 1 | |
| 7 | 17 | 3 | Martin Brundle | Tyrrell • Renault | 73 | +2 laps | ||
| 6 | 11 | Elio de Angelis | Lotus • Renault | 52 | engine | |||
| 19 | 29 | Pierluigi Martini | Minardi • Motori Moderni | 45 | radiator | |||
| 8 | 1 | Niki Lauda | McLaren • TAG Porsche | 37 | turbo | |||
| 18 | 4 | Philippe Streiff | Tyrrell • Renault | 16 | accident | |||
| 4 | 12 | Ayrton Senna | Lotus • Renault | 8 | engine | |||
| 15 | 27 | Michele Alboreto | Ferrari | 8 | turbo | |||
| 2 | 7 | Nelson Piquet | Brabham • BMW | 6 | valve | |||
| 13 | 20 | Piercarlo Ghinzani | Toleman • Hart | 4 | engine | |||
| 7 | 19 | Teo Fabi | Toleman • Hart | 3 | engine | |||
| 5 | 8 | Marc Surer | Brabham • BMW | 3 | valve | |||
| 20 | 24 | Huub Rothengatter | Osella • Alfa Romeo | 1 | electrics | |||
| 14 | 23 | Eddie Cheever | Alfa Romeo | 0 | collision | |||
| 12 | 22 | Riccardo Patrese | Alfa Romeo | 0 | collision | |||
| DNS | 33 | Alan Jones | Lola • Hart | driver ill |
Fastest lap - 01:08.149 - 216.796 km/h - Keke Rosberg (lap 74)