The Australian was wheeled back into the McLaren garage after lining up on the grid in fifth place, with the team discovering an apparent electrical issue with his MCL40.
The problem came after teammate Lando Norris also encountered trouble, with the Briton not leaving the garage to take up his sixth-place position on the grid.
Piastri’s issue follows his installation lap crash a week ago at Albert Park, where the Australian failed to start his home race.
Gabriel Bortoleto has also suffered an issue, with the Brazilian also confirmed as a non-starter for the race, while Alex Albon has also exited his Williams before the start after initially looking like he would start from the pit lane, with only 18 cars set to start the race.
More to come.
