Sebastian Vettel insists that he can't get carried away in the race for the 2013 F1 title, despite extending his lead in the standings last time out at Spa.

The German took a fifth victory of the season in Belgium to extend his championship advantage to 46 points over Ferrari's Fernando Alonso, who took second spot ahead of poleman Lewis Hamilton.

Vettel has now taken a maximum score in three of the last five races to establish his advantage out front, but the Red Bull man said he was well aware that he couldn't get carried away and that his lead could soon be cut in the races to come.

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"I have proven myself in 2010 and 2012 how quickly you can come back even though there is a big gap," he told Sky Sports. "Things can change quickly and in that regard we will just try to continue step by step, not get carried away with anything else and just focus on the job.

"I'm not completely aware of what's going on behind because I'm not a fan of looking at the scoreboard every minute. But Fernando has proven to be very, very consistent. Kimi, even though he didn't have the best race and had to retire, has always been in the points in every single race. Lewis proved to have a very strong package together with Mercedes. And in fairness, so does Nico. He didn't have the best start to the season so he's lacking a little bit of points in that regard.

"At the end of the day I keep it very simple, on purpose. There are a lot of points still out there to get, and definitely more points than my lead."

Vettel added that he would adopt the same approach as he had done in recent years of not thinking too much about the championship and simply taking each race as it comes.,

"We didn't allow ourselves to think like that in the past and shouldn't think differently now," he said when asked how he felt about people thinking the title was his. "There are examples where it [having such a lead] worked out, but there are also examples where it didn't.

"We shouldn't look at what is happening outside our box so to speak, and should work to get the maximum from our car. When you are free in your mind and ready to race to the maximum, you can score the best amount of points and that is what increases your advantage."