Sebastian Vettel is set to start the German Grand Prix from the back of the grid after he was unable to set a lap time during qualifying.
Vettel led the way through FP1 before finishing second and third across the remaining practice sessions, as Ferrari team-mate Charles Leclerc set the pace.
On Vettel’s outlap in Q1 he reported a loss of power and returned to the pit lane for Ferrari to undertake a diagnosis.
Vettel remained in the car while mechanics addressed the left-hand-side of the car, but with four minutes left in the session he climbed out of the SF90, signalling that the problem could not be repaired.
Ferrari confirmed that a problem with the airflow to the turbo was to blame for Vettel’s non-participation.
"Obviously very bitter," said Vettel. "I think the car is great. We missed out on a great opportunity but we will have another chance tomorrow.
"The car was good, we did some changes that should have been great for this afternoon, but it wasn’t meant to be."
It is the second time in three grands prix that Vettel’s qualifying has been wrecked by a reliability issue.
In Austria he was unable to partake in Q3 after a problem was detected on his SF90 and he started tenth.
It means he will start his home race from the back of the grid.
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