SUZUKA, Japan (AFP) - A triumphant Sebastian Vettel said Sunday he remains confident that he can still win this year's drivers world championship after his victory in the Japanese Grand Prix.

The 22-year-old German, who romped to an accomplished victory in his Red Bull car, said he believed that he can overcome Briton Jenson Button's 16-points lead on him and take the title.

"It can still be done," said Vettel, considered by Michael Schumacher to be a future multiple world champion.

"It would be nice to have a couple more races left, but with two races to go, we are here to fight and the best thing we can do is win like today.

"We have a great car, still improving, everyone in the factory is improving so we'll see."

Button now has 85 points to his Brawn GP team-mate Rubens Barrichello's 71 and Vettel's 69 with two more races left, in Brazil and Abu Dhabi.

Vettel said he knew he could win in Japan after securing pole position.

"On Saturday with pole position and also strategy-wise we were the favourites, but first of all you had the start," he said.

"We were confident and had good starts in the past, so were confident to defend the position.

"It was closer than I thought it would be, going into turn one. I saw a silver arrow on the left hand side. I was on the inside so I had advantage but it was closer than I thought.

"From there I pushed every single lap.

"The car was fantastic, I was able to get a good lap, we were longer (before pitting) than Jarno (Trulli) and Lewis (Hamilton) so it all worked out.

Until the end it was all under control until I put the soft tyres on the last stint.

"I wanted a bit of fun so did one quick lap, then the engineer came on and said be careful with the tyres as there might be a safety car and then two laps later there was a safety car."

He added: "Finally we made it. In the last couple of races we were a little bit up and down. Sometimes we had the pace, sometimes we didn't, so it is good to be back in the top position on Sunday."