Sebastian Vettel grid penalty frustrating - Horner

Red Bull team boss Christian Horner says the decision to demote Sebastian Vettel from third on the grid for the Abu Dhabi GP to the back of the field is "frustrating".

Vettel did not have enough fuel in his car for a fuel sample to be taken after qualifying, and stopped his car out on the track on his way back to the pits at the end of the session.

Horner added that Vettel reacted to news of the penalty in a "remarkably calm" way, and backed the reigning world champion to produce a positive result in Sunday's race.