Deformable cowling for vehicle

The nacelle (1) has a rigid reinforcement (4) for being connected to a body of a vehicle by a fastening device (6), which is located in vicinity of first end (41) of the reinforcement. The reinforcement bears a passenger seat (5) placed in vicinity of second end (42) of the reinforcement. The reinforcement comprises a deformable zone (4b) located between the ends and plastically deformed under the influence of shock caused by a mine. The seat is located in overhang with respect to the deformable zone so as to form a lever arm to cause bending of the nacelle at the level of the zone.