McLaren driver Jenson Button has won the Formula One Australian Grand Prix, in an incident-packed race. World champion Button won by 12 seconds from Renault's Robert Kubica, with Ferrari's Felipe Massa third.
Red Bull's Sebastian Vettel started from pole position and led for the first 25 laps before going off the track into a gravel trap, ending his race due to what he thought was brake failure.
Ferrari's Fernando Alonso was fourth and Mercedes' Nico Rosberg fifth. McLaren's Lewis Hamilton survived a late collision with Red Bull's Mark Webber to finish sixth, while Webber slipped down to ninth as a result.
Alonso leads the championship with 37 points, ahead of Massa on 33 and Button on 31.