Final positions after 56 of 56 laps:
1 F Alonso (Renault)
2 J Trulli (Toyota)
3 N Heidfeld (Williams)
4 J Montoya (McLaren)
5 R Schumacher (Toyota)
6 D Coulthard (Red Bull)
7 M Schumacher (Ferrari)
8 C Klien (Red Bull)
Alonso takes the chequered flag to clinch victory in Malaysia.
Lap 55: On the final lap, just two seconds separate Schumacher, Coulthard and Klien but the positions look unlikely to change now.
Lap 54: With only two laps to go, Trulli is on target for Toyota's first-ever podium finish.
Lap 52: Raikkonen is 2.5 secs behind Klien as he continues to press for a place in the points.
Lap 50: Ferrari's Barrichello pulls into the pits and reitres from the race. Lap 47: Alonso's 16-second lead could be threatened by the state of his tyres, which look to be blistering badly.
Lap 45: Michael Schumacher pits as he battles to get as many points as possible in the lower reaches of the top eight. He rejoins between the two Red Bull cars in seventh place. Raikkonen recovering from his puncture passes Massa for ninth place - the McLaren is nine seconds behind Klien's Red Bull with 10 laps to go.
Lap 44: Montoya pits and rejoins ahead of Ralf Schumacher to claim fourth place.
Lap 43: Trulli and Heidfeld both pit from second and third places.
Lap 42: Ralf Schumacher makes his final pit stop in the Toyota and Coulthard follows him in.
Lap 41: Alonso makes his second and final pit stop.
Lap 40: Alonso, who has now lapped Barrichello's Ferrari, is 17.1secs ahead of Trulli, who is 22.2secs in front of Heidfeld.
Lap 37: Webber makes a move on Fisichella at the last corner and they collide. The Williams goes for the corner on the outside and is alongside, but Fisichella's Renault slid slightly at the apex of the corner and hits the Williams. Both leap into the air and are too badly damaged to continue.
Lap 35: Webber is pressing Fisichella hard, but Heidfeld is also keen on the final podium place and is making the battle a three-way one. Barrichello pits.
Lap 34: Barrichello makes a mistake in Turn Four and is passed by Coulthard around the outside into the next corner. Klien passes Barrichello at the last corner.
Lap 32: Ralf Schumacher makes an ambitious move on Webber at the last corner and the two men bang wheels. Heidfeld catches them down the pit straight and tries to pass them both, but Webber comes out on top, with Heidfeld sneaking ahead of the Toyota.
Lap 31: Fisichella is struggling in third place and is under heavy pressure from Webber and Ralf Schumacher, with Heidfeld closing in fast as well.
Lap 26: With the field settling down after the pit stops, Alonso has a 12-second lead over Trulli, who is 6.7secs ahead of Fisichella.
Lap 25: Raikkonen suffers a puncture on his out lap - his right rear tyre is coming off the rim. Barrichello makes his first pit stop. Raikkonen makes it back to the pits and has a new tyre fitted and rejoins in 13th place.
Lap 24: Raikkonen pits from the lead in the McLaren - he gets out in front of Webber. Michael Schumacher also pits - from 30 seconds behind the leader.
Lap 23: Montoya pits from fifth place in the McLaren as Barrichello, who has not yet stopped, tries to find a way past Webber's Williams.
Lap 22: Fisichella pits from the lead and Webber follows him in.
Lap 21: Alonso pits from the lead - he was 7.7secs ahead of Trulli when he came in. The Italian follows the Renault in.
Lap 20: Ralf Schumacher makes a pit stop in the Toyota, and is followed in by Heidfeld's Williams and Coulthard's Red Bull.
Lap 18: Red Bull's Klien is the first man to make a pit stop, from ninth place.
Lap 16: Alonso sets another new fastest lap and ekes out his lead to 7.0secs - Fisichella is now 12.6secs behind his team-mate in third place.
Lap 14: Trulli takes 0.2secs off Alonso's lead but is still 6.8secs adrift, with Fisichella 3.8secs behind the Toyota in third.
Lap 12: Michael Schumacher remains in 13th place, 38.9secs behind leader Alonso and lapping two seconds off the Renault's pace.
Lap 10: Alonso is extending his lead every lap and is 6.4secs in front of Trulli.
Lap eight: Alonso moves 4.7secs ahead of Trulli, who has a three-second gap to Fisichella. Michael Schumacher remains in 13th place, 2.4secs behind Massa's Sauber. Raikkonen in sixth is coming under pressure from Heidfeld's Williams.
Lap six: Alonso extends his lead by a further 1.2secs to 3.9secs over Trulli's Toyota.
Lap five: Alonso is 2.7secs ahead of Trulli, who has 1.4secs on Fisichella in third. Webber in fourth is holding off Ralf Schumacher. Michael Schumacher is lapping 2.5secs off Alonso's pace in 13th place.
Lap three: Button retires with smoke pouring from the back of his car - and team-mate Davidson's car follows suit shortly afterwards. This comes despite BAR's decision to pit at the end of the Australian Grand Prix and fit fresh engines for this race.
Lap two: Button takes sixth place from Raikkonen at the end of the pit straight as Alonso sets fastest lap.
Lap one: Alonso retains the lead ahead of Trulli, Fisichella and Webber. Button moves up to seventh from ninth. Montoya and Barrichello spend much of the lap side by side, with the McLaren emerging ahead in 11th place behind the two Red Bulls.
0700: Fernando Alonso leads the field away for the formation lap.
The Renault team look in a formidably strong position to repeat their victory in the season-opening Australian Grand Prix, with Fernando Alonso and Giancarlo Fisichella qualifying first and third.
Alonso extended his advantage over the second-placed Toyota of Jarno Trulli in Sunday morning's second qualifying session with an impressive lap.
McLaren, who had been strongly fancied to show well in Malaysia, will be disappointed with sixth place for Kimi Raikkonen, while his team-mate Juan Pablo Montoya is down in 11th.
Much attention will be focused on the Ferraris to see if they can climb up from their 12th and 13th places on the grid, with Rubens Barrichello ahead of Michael Schumacher.
The race will be long and demanding for the drivers, who are faced with searing 36C heat and crippling tropical humidity.