Grosjean, eighth in the standings, pipped defending champion Vettel to the
second place on the grid.
It capped a disappointing day for Red Bull, who hold a 53-point advantage in
the constructors standings.
Vettel’s team-mate, Mark Webber, will start 11th on the grid. His title
chances had earlier taken a knock when he was pipped to a top 10 spot by
Bruno Senna.
Hamilton’s team-mate Jenson Button starts fourth, with Kimi Raikkonen (Lotus)
in fifth.