Motor vehicle steering system of a motor vehicle having a front wheel steering unit, a steering control unit, two front wheels and one or more rear wheels, wherein the front wheel steering unit having a steering wheel and at least one steering control device which is coupled to at least one of the front wheels for transmitting a steering movement, wherein the steering control unit is signal-connected to the steering wheel for detecting a steering angle (α) and the steering control unit is configured for this purpose, detecting the steering angle (α) of the steering wheel and actuating the steering control unit in such a way that the steering control unit transmits the detected steering angle (α) to the at least one front wheel, wherein at least two actuators are provided which are adapted to act on one or both of the front wheels and/or on one or more of the rear wheels, wherein the steering control unit has a processing unit configured for this purpose - to determine a current trajectory of the motor vehicle in a driving mode; - to detect a malfunction of the front wheel steering unit and/or the steering control unit during driving; - selecting at least one of the actuators in the event of detection of a malfunction; and - to control the at least one selected actuator so that the current trajectory of the motor vehicle is maintained with a small deviation during driving, characterised in that - the motor vehicle steering system is equipped with a data memory, whereby - the steering control unit is signal-connected to the data memory and in which data relating to the actuators are stored, wherein - data of the actuators relating to the reaction time, mode of operation and/or availability are stored in the data memory, and/or table values for control variables and/or data for achieving specific steering angle values are stored in the data memory, wherein - the processing unit is configured to read the data from the data memory and to select one or more actuators depending on a respective malfunction and/or a driving situation, so that the stored data is used to determine and select the actuator or actuators best suited for the corresponding driving situation in the event of a malfunction. - to determine a current trajectory of the motor vehicle in a driving mode; - to detect a malfunction of the front wheel steering unit and/or the steering control unit during driving; - selecting at least one of the actuators in the event of detection of a malfunction; and - to control the at least one selected actuator so that the current trajectory of the motor vehicle is maintained with a small deviation during driving, characterised in that - the motor vehicle steering system is equipped with a data memory, whereby - the steering control unit is signal-connected to the data memory and in which data relating to the actuators are stored, wherein - data of the actuators relating to the reaction time, mode of operation and/or availability are stored in the data memory, and/or table values for control variables and/or data for achieving specific steering angle values are stored in the data memory, wherein - the processing unit is configured to read the data from the data memory and to select one or more actuators depending on a respective malfunction and/or a driving situation, so that the stored data is used to determine and select the actuator or actuators best suited for the corresponding driving situation in the event of a malfunction.