Classification
| Pos | No | Driver | Constructor | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | 5 | Mario Andretti | Lotus-Ford | 75 | 1:41:47.06 | 1 | 9 |
| 2 | 6 | Ronnie Peterson | Lotus-Ford | 75 | +19.56 secs | 2 | 6 |
| 3 | 26 | Jacques Laffite | Ligier-Matra | 75 | +37.24 secs | 10 | 4 |
| 4 | 20 | Jody Scheckter | Wolf-Ford | 75 | +1:00.06 | 9 | 3 |
| 5 | 2 | John Watson | Brabham-Alfa Romeo | 75 | +1:05.93 | 7 | 2 |
| 6 | 7 | James Hunt | McLaren-Ford | 74 | +1 Lap | 4 | 1 |
| 7 | 19 | Vittorio Brambilla | Surtees-Ford | 74 | +1 Lap | 16 | |
| 8 | 27 | Alan Jones | Williams-Ford | 74 | +1 Lap | 18 | |
| 9 | 9 | Jochen Mass | ATS-Ford | 74 | +1 Lap | 17 | |
| 10 | 12 | Gilles Villeneuve | Ferrari | 74 | +1 Lap | 5 | |
| 11 | 18 | Rupert Keegan | Surtees-Ford | 73 | +2 Laps | 23 | |
| 12 | 3 | Didier Pironi | Tyrrell-Ford | 71 | +4 Laps | 13 | |
| 13 | 15 | Jean-Pierre Jabouille | Renault | 71 | +4 Laps | 11 | |
| 14 | 36 | Rolf Stommelen | Arrows-Ford | 71 | +4 Laps | 19 | |
| 15 | 17 | Clay Regazzoni | Shadow-Ford | 67 | Fuel Pipe | 22 | |
| Ret | 22 | Jacky Ickx | Ensign-Ford | 64 | Engine | 21 | |
| Ret | 14 | Emerson Fittipaldi | Fittipaldi-Ford | 62 | Throttle | 15 | |
| Ret | 11 | Carlos Reutemann | Ferrari | 57 | Accident | 3 | |
| Ret | 1 | Niki Lauda | Brabham-Alfa Romeo | 56 | Engine | 6 | |
| Ret | 4 | Patrick Depailler | Tyrrell-Ford | 51 | Engine | 12 | |
| Ret | 16 | Hans Joachim Stuck | Shadow-Ford | 45 | Suspension | 24 | |
| Ret | 35 | Riccardo Patrese | Arrows-Ford | 21 | Engine | 8 | |
| Ret | 25 | Hector Rebaque | Lotus-Ford | 21 | Exhaust | 20 | |
| Ret | 8 | Patrick Tambay | McLaren-Ford | 16 | Spun Off | 14 | |
| DNQ | 37 | Arturo Merzario | Merzario-Ford | ||||
| DNQ | 30 | Brett Lunger | McLaren-Ford | ||||
| DNQ | 28 | Emilio de Villota | McLaren-Ford | ||||
| DNQ | 10 | Alberto Colombo | ATS-Ford | ||||
| DNPQ | 32 | Keke Rosberg | Theodore-Ford |
Read more about this topic: 1978 Spanish Grand Prix