Red Bull's Sebastian Vettel has taken a six-point championship lead over Fernando Alonso by winning the Korean Grand Prix.

The German started in second position on the grid behind his teammate Mark Webber on Sunday and after moving into the lead on the run down to the first corner, did not have to look back.

This was Vettel's third win in a row and made him the first driver to win four races this season.

Webber finished second, with Ferrari's Alonso coming third. Felipe Massa was fourth in a Ferrari, while Lotus's Kimi Raikkonen ended up fifth.

McLaren's Lewis Hamilton's hopes of winning the title are effectively over after he ended in 10th place, leaving him 58 points behind Vettel.

There are only four races left this season.