Autódromo Juan y Oscar Gálvez · 13 January 1957
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Maserati Fangio 8 + Behra 6 + Menditeguy 4 + Schell 3 + Moss 1 + Bonnier 0 + Piotti 0 | Fangio 8 + Behra 6 + Menditeguy 4 + Schell 3 + Moss 1 + Bonnier 0 + Piotti 0 | 22 | |
| 2 | Ferrari Portago 1 + González 1 + Perdisa 0 + Trips 0 + Tomaso 0 + Castellotti 0 + Hawthorn 0 + Musso 0 + Collins 0 | Portago 1 + González 1 + Perdisa 0 + Trips 0 + Tomaso 0 + Castellotti 0 + Hawthorn 0 + Musso 0 + Collins 0 | 2 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Juan Fangio Maserati | Maserati | 3:00:55.900 | 100 | — | 8 | |
| 2 | Jean Behra Maserati | Maserati | +18.300s | 100 | — | 6 | |
| 3 | Carlos Menditeguy Maserati | Maserati | — | 99 | — | 4 | |
| 4 | Harry Schell Maserati | Maserati | — | 98 | — | 3 | |
| 5 | Alfonso de Portago Ferrari | Ferrari | — | 98 | — | 1 | |
| 5 | José Froilán González Ferrari | Ferrari | — | 98 | — | 1 | |
| 6 | Cesare Perdisa Ferrari | Ferrari | — | 98 | — | — | |
| 6 | Wolfgang von Trips Ferrari | Ferrari | — | 98 | — | — | |
| 7 | Jo Bonnier Maserati | Maserati | — | 95 | — | — | |
| 8 | Stirling Moss Maserati | Maserati | — | 93 | — | 1 | |
| 9 | Alessandro de Tomaso Ferrari | Ferrari | — | 91 | — | — | |
| 10 | Luigi Piotti Maserati | Maserati | — | 90 | — | — | |
| 11 | Eugenio Castellotti Ferrari | Ferrari | — | 75 | — | — | |
| 12 | Mike Hawthorn Ferrari | Ferrari | — | 35 | — | — | |
| 13 | Luigi Musso Ferrari | Ferrari | — | 31 | — | — | |
| 14 | Peter Collins Ferrari | Ferrari | — | 26 | — | — |