Alpine are reportedly "suspicious" of their fellow Formula 1 power unit constructors and the engine improvements they appear to have made in recent times.
Of the 10 teams on the grid, only four of them currently manufacture power units. Those are the 'big three' of Red Bull, Mercedes and Ferrari – all of whom supply engines to other teams – and Renault, who supply their own Alpine-branded team and have no other customers on the grid.
Under current F1 rules, an engine 'freeze' is currently in effect. It means that teams are not allowed to make any performance improvements to their power units until 2026, and can only make changes to improve reliability.
