The present invention relates to an automobile chassis parts condition monitoring diagnostic analysis methods and systems for analysis to diagnose and / or monitor the state of the automobile chassis parts are directly connected with the seat on the basis of the signal behavior of the knuckle sensor and various vehicle sensors. Automotive chassis components diagnostic analysis condition monitoring system according to an embodiment of the present invention to achieve this, a number of existing vehicle sensors that are connected to the communication network of the vehicle transmitting and receiving the sensor signal; And detecting the behavior of the car in the knuckle (knuckle), knuckle motion sensor is connected to the communication network; It may comprise; and to monitor and diagnose the chassis part of the motor vehicle based on the signals of the knuckle, and said vehicle behavior sensor existing sensor controller for analyzing the state of the chassis components.