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Hartley’s front-left suspension failed under braking at the end of Wellington Straight, putting him out of the session with less than 15 minutes on the clock. He walked away from the incident, and was given the all-clear to drive following checks at the medical centre.
Team mate Pierre Gasly didn’t return to the track as the team checked his car’s suspension following Hartley’s crash.
As there is only two hours between the end of final practice and qualifying, the team have been unable to repair the car, which suffered significant damage, meaning he will take no part in the session.
A Toro Rosso spokesperson told Formula1.com the team completed a full front suspension change on Gasly’s car ahead of the one-hour session that will decide Sunday's grid.