McLaren is still hoping to introduce its full new aerodynamic package in time for the Austrian Grand Prix, despite its new short nose having yet to pass its mandatory crash test.
The revamp, which will include floor, wings and other bodywork, also includes a new short nose, which is following the concept adopted by Williams and Red Bull.
The introduction of a short nose required a new crash test and this was an area that Red Bull struggled with, only managing to bring its version in time for the Spanish Grand Prix.
McLaren has also struggled to pass the crash test so far, with it eager to ensure that it pushes things to the limit in a bid to maximise performance.
Motorsport.com understands that further tests are now scheduled for next week and that the team is hoping modifications could be enough to get it the required FIA approval before next week's Austrian Grand Prix.
However, if that does not happen then the short nose will form part of a second stage of updates that are being prepared for the British Grand Prix.
A McLaren spokesman said: "Some significant aero updates require crash testing. They rarely pass their crash tests first time around.
"We are confident that our new nose box will pass its crash test in the near future."