McLaren is now the third team this season to be fined by the FIA for an unsafe release after a pit stop.
In the latter stages of FP2 in Shanghai, Stoffel Vandoorne re-emerged from the pit lane with a loose right rear tyre and the Belgian was forced to bring the car to a halt.
The safety of pit stops has been a major talking point so far this season, with Haas involved in a double botched stop in Australia and Ferrari engineer Francesco Cigarini breaking his leg in Bahrain when Kimi Raikkonen was wrongly released.
Defending world champion @LewisHamilton sets the pace in FP2 🏎️🏁
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Now McLaren is next under the spotlight, and have been fined 5,000 Euros.
“The stewards reviewed the video and audio of the pit stop of Car 2 and heard from the team representative,” read a report.
“The stewards determined that the car was released in an unsafe condition as the wheel was not properly attached to the car when released.
“The driver stopped the car in a safe manner as soon as the above became apparent to him.
“Consistent with previous decisions of a similar nature, the stewards decided that the grid place penalty mentioned [in the regulations] would not be applied as the driver took all appropriate actions at the first available opportunity.”