Sebastian Vettel will start last after failing to set a time at all, while Leclerc could not run in Q3 and will have to make up places of his own, having started Saturday as favourite for pole.
It left gaps in the higher places on the grid, with Kimi Raikkonen and Romain Gosjean taking the third row.
Lando Norris was dropped to the back of the grid alongside Vettel on race morning for a change of control electronics. Ferrari made a similar change on Vettel's car, although the penalty was immaterial.