Jenson Button believes this year's fight for the Formula One world title will go down to the wire, with the winner the driver who will stay coolest under pressure.

With five races to go just 24 points, less than for a race victory these days, separates the top five drivers in the standings - Mark Webber, Lewis Hamilton, Fernando Alonso, Button and Sebastian Vettel.

"You can't help but look at the drivers' championship table and just think 'Wow, how can it be so close?'" said Button.

"It's funny, after Spa everyone was saying it was a two-horse race between Lewis and Mark, but I can easily see this championship going right down to the last race."

He added: "I think we've seen that no one driver's going to walk away with the world title, that there's going to be a fight right to the very end."

Determining the deciding factors as to who will emerge as champion, Button added: "Consistency is important in some ways.

"Obviously you need a car that will get you to the finish of every grand prix, and you don't want to start making knee-jerk or radical decisions on set-up or strategy because you think it might give you an advantage.

"We're racers, so we'll always be racing, but the pressure's now on all of us.

"None of us can afford another non-finish or a mistake, and the guy who cracks least will be world champion."