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Red Bull team principal Christian Horner has had private talks with FIA President Mohammed bin Sulayem ahead of the 2022 Formula One season - and has opened up on what he makes of Mercedes' new vehicle for the upcoming campaign after claiming some parts were 'not legal'.

Teams have been forced to change their cars under new regulations for 2022, which has led to some interesting results in pre-season.

Ferrari and McLaren posted superb times in Barcelona testing, whilst Mercedes initially failed to keep up with the newfound pacesetters in their bid to claim a first Constructors' Championship since 2008 and 1998 respectively.

With Red Bull's Sergio Perez encountering problems in Barcelona, Horner has had a lot to mull over in his spell at the Austrian-based outfit.

After Mercedes' second outing in testing