Sebastian Vettel has tipped Sauber as a real dark horse at this weekend's Japanese grand prix. The reigning world champion won last time out in Singapore with his Red Bull, but he admits that the Fe...

Sebastian Vettel has tipped Sauber as a real dark horse at this weekend's Japanese grand prix.

The reigning world champion won last time out in Singapore with his Red Bull, but he admits that the Ferrari-powered C31 should be a standout performer in Japan.

"I believe Sauber will do very well this weekend," Vettel is quoted by Brazil's Totalrace.

"They have a really great car with a lot of downforce."

Sauber's drivers agree.

"Definitely our car could be competitive here," said local driver Kamui Kobayashi in Japan.

"After Singapore, which is a little bit of a difficult circuit for us, Suzuka is our best track (so) I think it will be great."

Sergio Perez, who has finished on the podium three times in 2012 so far, told reporters: "I'm looking forward a lot to fight for the victory here.

"I think we've got a very strong car at this circuit."

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