Red Bull are facing more questions about their driver line-up than any of their Formula 1 rivals. Max Verstappen and Sergio Perez could both leave, albeit for very different reasons. Verstappen is planning to leave before 2026 if Red Bull’s performance doesn’t improve next year. He’s set to win a fourth consecutive drivers’ championship, but he’s seen the team lose their way this year. A high-profile exodus, led by legendary designer Adrian Newey, has sewn uncertainty over the team’s long-term prospects. The consequences may already be emerging. Verstappen has only won one of the last 11 races…