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This paper investigates the integration of a six-degree-of-freedom (6-DOF) hexapod motion platform (specifically the Qubic System QS-S25) within a Human-and-Hardware-in-the-Loop (H2iL) architecture for the assessment of vehicle dynamics. By utilizing six actuators to replicate surge, sway, heave, roll, pitch, and yaw, the system facilitates the quantification of accelerations experienced by occupants during specific longitudinal and lateral maneuvers, such as gear shifts, launches, and throttle transitions. The study evaluates the simulator's efficacy in fine-tuning vehicle parameters to optimize subjective occupant comfort. Furthermore, considering the inherent kinematic constraints of the platform—namely actuator displacement, velocity and acceleration limits—this research identifies the operational envelope and the specific simulation scenarios for which the system is most effectively suited.