On the C10 car, the boarding was studied again to allow easier access to the cockpit. For this, the opening threshold has been lowered. On this car, the threshold is positioned lower than the production version, almost at the bottom of the lateral air intake. The C10 car was then painted in different colors for an homologation crash test (front crash at 52km/h), the 16th april 1992.

The carcass of the car was kept and was in Italy at a time.