The body too is made entirely from aluminium: both the skin and the frame are pressed sheet aluminium and are strengthened by casts and extrusions at the critical points of the door and roof. The components are assembled using different processes depending on their different functions: MIG (Metal Inert Gas) welds, spot welds, self-perforating rivets. The result is that the 612 Scaglietti is 40% lighter than other vehicles of similar dimensions. Its structural performance is also excellent, with the complete body around 60% more efficient in terms of weight-rigidity ratio than the 456.

High static and dynamic rigidity (stiffness) combined with an initial torsional frequency mode of 47 Hz also mean a significant improvement in the car’s vibration and acoustic values, which in turn enhance occupant comfort and handling.