The 500C features fully stamped body-side panels retaining the hatchback 500's profile (door frames, roof pillars and side windows) to increase structural rigidity, reduce scuttle shake, and retain side and curtain airbags — in trade for a less open experience than a fully pillarless convertible. Weighing 40 kg (88 lbs) more than its hatchback counterpart, the 500C features a slightly longer windshield than the hatchback, with a concealed and reinforced upper structural cross-member; a stronger front cross-member behind the instrument panel; a rear strut on which the retracted roof folds; reinforced B-pillars; and the rear anti-roll bar setup from the Abarth, high-performance model.