A more streamlined version called the Nerva Grand Sport appeared in 1935 and replaced the Nervasport, remaining in production until the summer of 1937.

[2] This first model can be recognized by having a straight one-piece front bumper, five equally sized vent flaps on the bonnet sides, and a fairly upright grille.

The car was considered solid, fast, and safe, albeit lacking in brakes in spite of them being of a servoed (mechanical) design.

First shown at the 27th Paris Motor Show in October 1933 (although recognized by the French authorities as a distinct model one month earlier), the ZC 2 version received streamlined bodywork reminiscent of a period Chrysler product.

The vent flaps are now larger towards the rear of the car and the front bumper now has a pronounced curving dip in the centre, all of which adds to the streamlined motif.

The wheelbase increased by about 7 cm (2.8 in) and the bonnet now sports four long chrome-capped vents, accenting its length.

[4] Production of the ACN 1 ended very soon though, in September 1935, in favor of the hyper profilée ("ultra-streamlined") Nerva Grand Sport.

[2] A super-streamlined version called the Nerva Grand Sport (ABM 3) appeared in March 1935 and was offered alongside the Nervasport for a little while.