The class-leading Tatuus MSV GB3-025 car is raced in the GB3 Championship, and was introduced ahead of the 2025 season.

The car features a completely revised chassis compared to the previous generation car, 35% more downforce from an F1-inspired CFD optimised aero package, a 30bhp power increase, and DRS for the first time, plus class leading safety standards. The car will receive a further upgrade ahead of 2026, with the addition of a 2.4 litre Mountune engine for greater torque, aerodynamic revisions and chassis improvements.