Ronda 4 — tiempos Q1, Q2 y Q3 - 2003-04-20
Michael Schumacher (Ferrari) firmó la pole del San Marino Grand Prix de 2003 con un crono de 1:22.327.
Ralf Schumacher (Williams) completó la primera fila a 0.014s de la pole, con Rubens Barrichello (Ferrari) tercero en parrilla. Olivier Panis (Toyota) entró a Q3 en P10, mientras que Nick Heidfeld (Sauber) se quedó fuera por 0.240s.
La Q3 se decidió en un margen de 1.133s — de la pole a P10 — con Olivier Panis (Toyota) cerrando el top 10.
| Pos | Piloto | Escudería | Q1 | Q2 | Q3 | Diferencia |
|---|---|---|---|---|---|---|
| 1 | Michael Schumacher | Ferrari | 1:22.327 | — | — | 1:22.327 |
| 2 | Ralf Schumacher | Williams | 1:22.341 | — | — | +0.014 |
| 3 | Rubens Barrichello | Ferrari | 1:22.557 | — | — | +0.230 |
| 4 |
| Williams |
| 1:22.789 |
| — |
| — |
| +0.462 |
| 5 | Mark Webber | Jaguar | 1:23.015 | — | — | +0.688 |
| 6 | 7Kimi Räikkönen | McLaren | 1:23.148 | — | — | +0.821 |
| 7 | Jacques Villeneuve | BAR | 1:23.160 | — | — | +0.833 |
| 8 | 14Fernando Alonso | Renault | 1:23.169 | — | — | +0.842 |
| 9 | 22Jenson Button | BAR | 1:23.381 | — | — | +1.054 |
| 10 | Olivier Panis | Toyota | 1:23.460 | — | — | +1.133 |
| 11 | Nick Heidfeld | Sauber | 1:23.700 | — | — | +1.373 |
| 12 | David Coulthard | McLaren | 1:23.818 | — | — | +1.491 |
| 13 | Cristiano da Matta | Toyota | 1:23.838 | — | — | +1.511 |
| 14 | Heinz-Harald Frentzen | Sauber | 1:23.932 | — | — | +1.605 |
| 15 | Antônio Pizzonia | Jaguar | 1:24.147 | — | — | +1.820 |
| 16 | Jarno Trulli | Renault | 1:24.190 | — | — | +1.863 |
| 17 | Giancarlo Fisichella | Jordan | 1:24.317 | — | — | +1.990 |
| 18 | Justin Wilson | Minardi | 1:25.826 | — | — | +3.499 |
| 19 | Ralph Firman | Jordan | 1:26.357 | — | — | +4.030 |
| 20 | Jos Verstappen | Minardi | — | — | — | — |