Fernando Alonso won the Malaysian Grand Prix 2005 at Sepang International Circuit on 20 March 2005, starting from pole position. Jarno Trulli finished second for Toyota, with Nick Heidfeld completing the podium for Williams. Kimi Räikkönen set the fastest lap with a time of 1:35.483.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 1 | Fernando AlonsoALO | Renault | 56 | 1:31:33.736 | 10 | |
| 2 | 2 | Jarno TrulliTRU | Toyota | 56 | +24.327 | 8 | |
| 3 | 10 | Nick HeidfeldHEI | Williams | 56 | +32.188 | 6 | |
| 4 | 11 | Juan Pablo MontoyaMON | McLaren | 56 | +41.631 | 5 | |
| 5 | 5 | Ralf SchumacherSCH | Toyota | 56 | +51.854 | 4 | |
| 6 | 8 | David CoulthardCOU | Red Bull | 56 | +1:12.543 | 3 | |
| 7 | 13 | Michael SchumacherMSC | Ferrari | 56 | +1:19.988 | 2 | |
| 8 | 7 | Christian KlienKLI | Red Bull | 56 | +1:20.835 | 1 | |
| 9 | 6 | Kimi RäikkönenRAI | McLaren | 56 | +1:21.580 | 0 | ⚡ 1:35.483 |
| 10 | 14 | Felipe MassaMAS | Sauber | 55 | +1 Lap | 0 | |
| 11 | 17 | Narain KarthikeyanKAR | Jordan | 54 | +2 Laps | 0 | |
| 12 | 18 | Tiago MonteiroTMO | Jordan | 53 | +3 Laps | 0 | |
| 13 | 19 | Christijan AlbersALB | Minardi | 52 | +4 Laps | 0 | |
| R | 12 | Rubens BarrichelloBAR | Ferrari | 49 | Tyre | 0 | |
| R | 3 | Giancarlo FisichellaFIS | Renault | 36 | Collision | 0 | |
| R | 4 | Mark WebberWEB | Williams | 36 | Collision | 0 | |
| R | 16 | Jacques VilleneuveVIL | Sauber | 26 | Spun off | 0 | |
| R | 9 | Jenson ButtonBUT | BAR | 2 | Engine | 0 | |
| R | 15 | Anthony DavidsonDAV | BAR | 2 | Engine | 0 | |
| R | 20 | Patrick FriesacherFRI | Minardi | 2 | Spun off | 0 |
| Pos | Driver | Team | Q1 | Q2 | Q3 |
|---|---|---|---|---|---|
| 1 | Fernando Alonso | Renault | 1:32.582 | 1:35.090 | - |
| 2 | Jarno Trulli | Toyota | 1:32.672 | 1:35.253 | - |
| 3 | Giancarlo Fisichella | Renault | 1:32.765 | 1:35.683 | - |
| 4 | Mark Webber | Williams | 1:33.204 | 1:35.700 | - |
| 5 | Ralf Schumacher | Toyota | 1:33.106 | 1:35.901 | - |
| 6 | Kimi Räikkönen | McLaren | 1:32.839 | 1:36.644 | - |
| 7 | Christian Klien | Red Bull | 1:33.724 | 1:35.865 | - |
| 8 | David Coulthard | Red Bull | 1:33.809 | 1:35.891 | - |
| 9 | Jenson Button | BAR | 1:33.616 | 1:36.216 | - |
| 10 | Nick Heidfeld | Williams | 1:33.464 | 1:36.453 | - |
| 11 | Juan Pablo Montoya | McLaren | 1:33.333 | 1:36.757 | - |
| 12 | Rubens Barrichello | Ferrari | 1:34.162 | 1:37.340 | - |
| 13 | Michael Schumacher | Ferrari | 1:34.072 | 1:37.561 | - |
| 14 | Felipe Massa | Sauber | 1:34.151 | 1:37.733 | - |
| 15 | Anthony Davidson | BAR | 1:34.866 | 1:37.024 | - |
| 16 | Jacques Villeneuve | Sauber | 1:34.887 | 1:38.108 | - |
| 17 | Narain Karthikeyan | Jordan | 1:37.806 | 1:39.850 | - |
| 18 | Tiago Monteiro | Jordan | 1:37.856 | 1:40.106 | - |
| 19 | Patrick Friesacher | Minardi | 1:39.268 | 1:41.918 | - |
| 20 | Christijan Albers | Minardi | 1:40.432 | 1:42.569 | - |