The Kick Sauber C45 is a Formula One car designed and constructed by Stake F1 Team Kick Sauber to compete in the 2025 Formula One World Championship.

Sauber unveiled the car's livery at the F1 75 Live event on 18 February 2025.

[3] The car has been designed to build on the late-season development package brought to the Kick Sauber C44 and features aerodynamic, suspension, and cooling changes.

[3] It is expected that the C45 will make its public debut at Bahrain International Circuit during official preseason testing.

Prior to the car's debut, both drivers completed testing programmes in the C44 at Yas Marina and in the C42 at Circuit de Barcelona-Catalunya under the Testing Previous Cars (TPC) programme.