Jenson Button believes he will only make an impact on what has so far been a ‘mixed-up, crazy season’ if he cracks the consistency code so far eluding him. Button started the current campaign on the right foot, winning in Australia but no-one could have predicted what has since unfolded as overall there have been five different winners in the opening five unpredictable races. In the championship standings two-time winners Sebastian Vettel and Fernando Alonso lead the way on 61 points, with the top seven drivers covered by 20 points less than for a win. Contrast that to a year ago when Vettel won four of the initial five races, collecting 118 points, with his nearest challenger 41 points adrift. Button knows if there was another runaway leader this year his season would be virtually over by now. As it is, with Button just 16 points adrift of Vettel and Alonso, he appreciates his difficulty with the rubber is not having too much effect on his hopes — so far. Ahead of the Monaco Grand Prix on Sunday, Button said: “It\'s amazing how many points people are getting this year. We\'ve had 125 points up for grabs, and the leaders have 61. “It just shows you how mixed up and crazy this season is. “You want to be as consistent as possible, and the people who understand the tyres are consistently scoring good points. They\'re going to be the people at the end. So we have to get that consistency.”