Former world champion Jenson Button claims McLaren has found the source of the flaws on the radical MP4-28.
The problems with the car have been identified as the reason for such a disappointment for the Woking team this season.
According to motorspot.com Button said McLaren were: "not a position we want to be in."
Button also conceded that the lack of form his team have showed this season "hurt."
As a consequence of their results, the McLaren team have slipped down into the middle of the field this year, finding themselves behind Force India.
Button does believe however that the current ten-point gap between the teams in the constructor's championship can be overhauled.
"They (Force India) didn't make any mistakes in the design of their car in the winter," said Button.
"Yes, we are behind them now, but I don't think we'll be behind them at the end of the season."
The Formula 1 race also admits that the decision to take a radical approach this season "didn't work out", while Force India simply "developed their car from 2012".
"They are competitive now," he added, "but I think we will be able to improve more than they will."
Finally Button claims McLaren has now pinpointed the areas where the radical MP4-28 is flawed and stated they will focus on an all-new car for the extensive regulation changes coming next year.
"We will continue to develop this (2013) car," he explained, "but only in the areas that will help us in 2014.
"Our goal has to be to build a good car for 2014," added Button.
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