Variable Steering Gear Ratio

Variable Steering Gear Ratio
The variable steering gear ratio adapts the steering gear ratio to the road speed and the steering angle requested by the driver. The steering is designed to be indirect at high speeds and direct at low speeds.
Vehicle maneuverability is significantly increased at slow speeds or when parking by the active front steering actuating unit. The driver no longer needs to grip the steering wheel excessively. When the vehicle is stationary, 2 turns are enough to move the steering wheel from one lock to the other.
At high speeds (> 75 mph), active steering allows a more indirect steering gear ratio than do conventional steering systems. The servomotor operates in the opposite direction to the steering wheel angle at high speeds.
Unintentional steering movements are prevented in conjunction with the increased steering torque level (Servotronic).