Nico Rosberg on pole as Lewis Hamilton ends up with a 55-place grid penalty

World champion will start from back of the grid

Mercedes, Nico Rosberg,

Mercedes driver Nico Rosberg of Germany steers his car during the third practice session at the Belgian Formula One Grand Prix circuit in Spa-Francorchamps, Belgium, Saturday, Aug. 27, 2016. The Belgian Formula One Grand Prix will be held on Sunday. (AP Photo/Olivier Matthys)

Nico Rosberg will start the Belgian Grand Prix from pole position.

The German Mercedes driver set the fastest time in Saturday's session to finish ahead of Red Bull's Max Verstappen, who will start second.

The Ferrari pair of Kimi Raikkonen and Sebastian Vettel are third and fourth respectively.

Reigning three-time world champion and 2016 leader Lewis Hamilton will start from the back of the grid after a 55-place grid penalty.

Use of extra engine parts have incurred the penalties but they will be served solely in Belgium and not at subsequent Grand Prix.

Two-time champion Fernando Alonso has a 20-place penalty, while Marcus Ericsson and Esteban Gutierrez have 10 and 5 place penalties respectively.