In the event of a collision, reducing the impact to the occupant and maintaining the available survival space within the body are essential. Mitsubishi Motors first introduced its Reinforced Impact Safety Evolution "RISE" body construction in the 1996 Galant, setting a new standard for improved collision safety performance.
Grandis, sold from May 2003, utilizes "straight frame construction", "octangular front side members", and "3-way input distribution cross-dash pillar braces" to minimize cabin deformation while effectively absorbing and distributing impact energy and further refined RISE technology. In addition, Grandis incorporates "tailored blank" technology whereby welds are formed between steel materials of varying thickness for improvements in both impact safety performance and weight reduction due to the optimal allocation of material.

Special construction is used to reduce contact between the foot and the brake pedal and the foot-actuated parking brake in an impact forward of the vehicle. This reduces injury to the driver's ankle area.
In a frontal impact, the backward movement of the engine may cause the brake booster to get pushed in toward the vehicle interior, but this construction allows the brake pedal to withdraw where it is attached at its upper end, allowing it to move down along the stopper plate, thus reducing pedal interference.