A device for mounting an air-conditioner compressor on a vehicle body of a motor vehicle, having a retaining unit, which is mounted by at least two bearing elements on the vehicle body and to which the air-conditioner is attached. The retaining unit is arranged on a driven axle of the motor vehicle. In addition to the air-conditioner compressor, a drive assembly of the motor vehicle is attached to the retaining unit. The drive assembly is mounted by at least two further bearing elements on the vehicle body.