By ESPNSTAR.com staff
It was a case of dashed expectations at Silverstone in the past weekend as Lewis Hamilton started and finished in eighth position in a race that was expected to suit the British drivers. And Button ended the race in tenth place, only managing to get a single point following a mistake by Force India's Nico Hulkenberg.
Button wants the engineers to take a serious look at the car as he feels that the other teams are surpassing the vehicle on many fronts.
"It's not just the Red Bulls and the Ferraris that are quicker than us, a lot of cars are," he told the Independent.
"The Sauber is quicker in high-speed corners than us, the Williams is quicker in low-speed corners.
"We don't seem to be exceptionally strong anywhere at the moment."
Button's teammate Hamilton has fared slightly better, and currently lies in fourth, 37 points behind leader Fernando Alonso. However, he too expressed concerns, saying: "You've got to look at the cars in detail -- just look at them and ours looks different from the others.
"That's a significant difference. I'm not an aerodynamicist but there's got to be something there, so that's what we're looking at for this car, but also for next year's car.
"It is too big a change for this season."
Hamilton though stopped short of criticising the MP4-27 outright, when asked if it was causing too many problems. "I'm not using those words, I'll let you use those words," he replied.
The 27-year-old signed off with words of caution. "We are still in the fight, but unless we find a lot of time, it's going to be hard to stay in it," he said.
Red Bull supremo Christian Horner, however, refused to rule out the McLaren duo. He believed that it was pure luck that led to Mark Webber's victory and told Auto Motor und Sport that the cars "were not a factor".
"At this stage of the season I'm not writing anyone off. Not even Jenson Button," he added.