| «1985-06» | USA Grand Prix - IV Detroit Grand Prix |
| 1985-06-23 | Detroit - 63 laps × 4.023 km : 253.449 km |
| Pos | Qualy | Car | Driver | Constructor |
|---|---|---|---|---|
| 1 | 1 | 12 | Ayrton Senna | Lotus • Renault |
| 2 | 2 | 5 | Nigel Mansell | Williams • Honda |
| 3 | 3 | 27 | Michele Alboreto | Ferrari |
| 4 | 4 | 2 | Alain Prost | McLaren • TAG Porsche |
| 5 | 5 | 6 | Keke Rosberg | Williams • Honda |
| 6 | 6 | 16 | Derek Warwick | Renault |
| 7 | 7 | 23 | Eddie Cheever | Alfa Romeo |
| 8 | 8 | 11 | Elio de Angelis | Lotus • Renault |
| 9 | 9 | 28 | Stefan Johansson | Ferrari |
| 10 | 10 | 7 | Nelson Piquet | Brabham • BMW |
| 11 | 11 | 8 | Marc Surer | Brabham • BMW |
| 12 | 12 | 1 | Niki Lauda | McLaren • TAG Porsche |
| 13 | 13 | 19 | Teo Fabi | Toleman • Hart |
| 14 | 14 | 22 | Riccardo Patrese | Alfa Romeo |
| 15 | 15 | 15 | Patrick Tambay | Renault |
| 16 | 16 | 26 | Jacques Laffite | Ligier • Renault |
| 17 | 17 | 25 | Andrea de Cesaris | Ligier • Renault |
| 18 | 18 | 3 | Martin Brundle | Tyrrell • Ford Cosworth |
| 19 | 19 | 4 | Stefan Bellof | Tyrrell • Ford Cosworth |
| 20 | 20 | 9 | Manfred Winkelhock | RAM • Hart |
| 21 | 21 | 18 | Thierry Boutsen | Arrows • BMW |
| 22 | 22 | 24 | Piercarlo Ghinzani | Osella • Alfa Romeo |
| 23 | 23 | 10 | Philippe Alliot | RAM • Hart |
| 24 | 24 | 17 | Gerhard Berger | Arrows • BMW |
| 25 | 25 | 29 | Pierluigi Martini | Minardi • Motori Moderni |