Sebastian Vettel will begin his first race for Aston Martin at the back of the grid on Sunday after being given a five-place penalty.
Stewards found the four-times Formula One world champion, who has moved from Ferrari, failed to respect double yellow warning flags at turn one in Saturday's qualifying.
The 33-year-old German had qualified 18th but drops to last after the penalty.
Australian Grand Prix
‘Scooter for Seb’ - Vettel suffers agonising DNF in Melbourne
10/04/2022 AT 06:30
Stewards said in a statement that Vettel had not abandoned his lap when Russian Nikita Mazepin spun ahead of him during the first qualifying phase.
"He (Vettel) explained to the Stewards that he saw the smoke ahead of him, but was unsure if it was a lock-up or a stopped car until he was quite close to the car and the smoke was lifting," they added.
"The driver would have received a warning on his dash and the team should have been able to see that the sector had been a double yellow and could have advised the driver as other teams did.
"While the argument that the driver was already inside the sector when it went double yellow evokes sympathy, the Stewards feel it is important to note that he was approaching an incident visible ahead of him."
Vettel joined Aston Martin with hopes of restoring some of the lustre that faded during his last two years at Ferrari, when he made glaring errors and was out-performed by team mate Charles Leclerc.
Canadian team mate Lance Stroll qualified 10th.

'I haven't had much time in it yet!' - Vettel on his new car

Australian Grand Prix
Leclerc clinches Ferrari's first pole position in Australia for 15 years
09/04/2022 AT 05:21
Australian Grand Prix
Verstappen expecting Ferrari-Red Bull shoot-out for pole in qualifying
08/04/2022 AT 12:01