Vettel is starting at the back of the grid for the Malaysian Grand Prix after he was hit by an engine problem during Q1.

Overnight analysis of the power unit on Vettel's car has pinpointed the problem to a broken manifold that fed air from the compressor to the internal combustion unit.

The issue caught Ferrari by surprise as the power unit had run without problem on the dyno in Maranello prior to being shipped to Malaysia, and the first indication of an issue only came up during Q1.

With Vettel starting at the back of the grid, Ferrari has taken the opportunity to fit new engine components – as the grid penalties will not cost him anything.

It is understood he is being fitted with his fifth new internal combustion engine, his fifth MGU-H and his fifth turbo – which is set to hand him a theoretical 20-place grid penalty.