What does variable steering ratio mean for the Audi A6?

[StAmara]

The variable steering ratio in a car refers to adjusting the steering gear's rotation ratio based on the vehicle's speed and steering angle. Here are the specific details: Function: When the car is driving at a relatively low speed or when the steering angle is large, a smaller steering ratio is provided. When the car is driving at high speed or the steering angle is small, a larger steering ratio is provided to enhance the stability of the vehicle body. Types: Currently, there are mainly two types of variable steering ratios in cars. One relies on a special rack to achieve the effect, which has a relatively simple working principle and lower production costs. The other method is more complex, utilizing a planetary gear structure and electronic system, resulting in higher production costs. Based on structure, they can be divided into mechanical variable steering ratio systems and electronic variable steering ratio systems.