Only three engine manufacturers remain in F1 and Red Bull face limited options in engine supply, while the sport must now consider which direction it takes in power units to ensure its future. Mercedes will be supplying three other teams in 2021 and have declined to sell engines to Red Bull, their closest competitor, in the past. Renault is the only manufacturer left, although there is the possibility that Red Bull could opt to manufacture their own engine, perhaps based on acquiring the rights to the Honda unit, but this would be a hugely expensive commitment. At the time he was sceptical that Red Bull would meet that requirement.

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