Romain Grosjean will be allowed to keep his third place on the grid for Sunday's Grand Prix in Hungary, despite his car failing a post-qualifying front-floor deflection test.

According to the FIA, Grosjean's E21 car deflected more than five millimetres vertically when a load was applied, whereas the cars of Lewis Hamilton (Mercedes) and Sebastian Vettel (Red Bull) did not.

The team argued that the issue was a result of the car hitting a kerb during the second round of qualifying on Saturday afternoon, and following a meeting with all parties the race stewards decided to accept this explanation and allowed Grosjean's times to stand.

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If the decision had gone the other way then Grosjean's times would have been excluded and the Frenchman would have been forced to start form the back of the grid at the Hungaroring.

"Based on the telemetry it was apparent the car suffered an impact during Q2 resulting in a vertical acceleration ranging from -7.3g to +11.1g," the stewards stated in their report on the investigation.

"Video evidence verified the car bottomed at turn 11 consistent with the telemetry,: the statement continued. "It is considered reasonable this impact caused a fracture in the floor stay of car 08.

"It was confirmed by physical examination the floor stay on car 08 was identical to that on car 07, which was intact," the statement pointed out, referring ot the car of Grosjean's Lotus team mate Kimi Raikkonen.

"It is the conclusion of the stewards the failure of this part was due to the impact in Q2 and subsequently caused the car to fail to meet the requirements of article 3.17.5.

"Accordingly this is deemed to be a case of accidental damage, not a case of non-compliance," the stewards concluded - to the team's intense relief.