F1:Indian GP result .
Sebastian Vettel dominated the Indian Grand Prix to take a fourth win in a row and extend his championship lead over Ferrari's Fernando Alonso.
The Red Bull driver is 13 points clear of the Spaniard, who was second ahead of Vettel's team-mate Mark Webber.
The Australian was holding off Alonso when he suffered a Kers power-boost problem and the Ferrari swept by.
Lewis Hamilton closed on Webber but had to settle for fourth ahead of McLaren team-mate Jenson Button.
Indian GP top 10
1 Sebastian Vettel - Red Bull 1:31:10.744
2 Fernando Alonso - Ferrari +00:09.437
3 Mark Webber - Red Bull +00:13.217
4 Lewis Hamilton - McLaren +00:13.909
5 Jenson Button - McLaren +00:26.266
6 Felipe Massa - Ferrari +00:44.674
7 Kimi Raikkonen - Lotus +00:45.227
8 Nico Hulkenberg - Force India +00:54.998
9 Romain Grosjean - Lotus +00:56.103
10 Bruno Senna - Williams +01:14.975
Vettel is a strong favourite for the title, with Red Bull in imperious form and 75 points available in the remaining races.
The German equalled the legendary Ayrton Senna's record of leading every lap of a race for three consecutive grands prix, set for McLaren in 1989. And Vettel won in India for the second straight year after dominating here in 2011.