While the reason for Horner's ousting has not been revealed, Red Bull senior advisor Helmut Marko has pointed out that performance concerns led to his exit, and that the decision was taken by the managing director of Red Bull GmbH, Oliver Mintzlaff. Newsweek Sports reported his comments:

Christian Horner was axed without warning by Red Bull last week, just days after the British Grand Prix where his friend Jeremy Clarkson had spoken to him at Silverstone

Max Verstappen has opened up about his future plans in Red Bull after Christian Horner's sacking as team principal.The four times Formula One champion recently revealed that Christian’s departure from he team would make no difference