Power-assisted steering system of an automobile

The invention concerns a servo-assisted steering system ( 1 ) for a motor vehicle, in which the steering system ( 1 ) comprises a steering wheel ( 2 ) for presetting a desired steering angle for the wheels ( 3 ) of the motor vehicle, driving-dynamics means ( 4 ) for superimposing a correction angle on the steering angle, said correction angle being determined with a view toward increasing the driving stability and/or the driving comfort of the motor vehicle, and a servo drive ( 6 ). To keep the efficiency of the driving-dynamics means ( 4 ) nearly constant over the entire road-speed range of the vehicle, it is proposed that the servo drive ( 6 ) be implemented as a variable torque assistance system, the degree of torque assistance (M) being dependent on the road speed (V) of the vehicle and on at least one variable of the driving-dynamics means ( 4 ) that characterizes the correction angle.