Rollover protection for motor vehicles

The system (1) has a rollover body (2) displaceable from a resting position into a rollover position. A drive unit (3) adjusts the body in a danger case from the resting position into the rollover position. The drive unit has a drive energy storage having drive energy required for adjusting the body. The body is connected with the drive unit over a housing (4) of the drive unit for assembly-stable arrangement of the body. A connection unit extends over a partial area of the body and/or the drive unit. A projection (6) is arranged in a retainer (7) extending over a partial area of the housing.