Sebastian Vettel has 'promised' the Tifosi he will continue pushing for the 2015 Formula 1 World Championship title until it becomes mathematically impossible after lifting himself into the hunt with his Singapore Grand Prix win.

A dominant third victory of the 2015 season at the Marina Bay Circuit put Vettel on the cusp of Nico Rosberg for second in the F1 standings, while a retirement for Lewis Hamilton in Singapore would also bring him into closer range with the lead too.

Though Vettel proceeded the slip back again when he finished third behind the two Mercedes' in the Japanese Grand Prix, he has nonetheless vowed to the Ferrari fans that he will work hard to keep himself in the running as long as he can over the remaining five races.

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"We cannot make any promises [to win the title]," he said. "I think the promise to give is to ourselves and the Tifosi that are supporting us is that we will try everything we can so if ever Sunday there is a new chance we need to make sure we are in the best position for Friday, Saturday for the race.

"Then we will see what we can do. Clearly we are not the favourites if you look at the championship, but we will see."

Following the Japanese Grand Prix, Vettel is now 57 behind Hamilton in the overall standings heading to Russia, but remains only nine points shy of Rosberg.