| GP of Argentinia Buenos Aires 19-01-1958, 80 laps of 3.912 m, 312.960 m | |||||
| Pos | No | Driver | Team-engine | Diff | Reason |
| 1 | - | Stirling Moss | Cooper-Climax | 2:19:33.7 | - |
| 2 | - | Luigi Musso | Ferrari | -00:02.7 | - |
| 3 | - | Mike Hawthorn | Ferrari | -00:12.6 | - |
| 4 | - | Juan Manuel Fangio | Maserati | -00:53.0 | - |
| 5 | - | Jean Behra | Maserati | -2 laps | - |
| 6 | - | Harry Schell | Maserati | -3 laps | - |
| 7 | - | Carlos Menditeguy | Maserati | -4 laps | - |
| 8 | - | Francesco Godia | Maserati | -5 laps | - |
| 9 | - | Horace Gould | Maserati | -9 laps | - |
| 10 | - | Peter Collins | Ferrari | 1 lap | Unknown |
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