Motor vehicle, parking assisting device and audio system

The utility model provides embodiments of a motor vehicle, a parking assisting device and an audio system. The motor vehicle comprises the audio system and the parking assisting device; the audio system comprises an audio host (1) and a loudspeaker (4); the parking assisting device comprises a motor vehicle backing radar controller (6) and a motor vehicle backing radar sensor (2) which are connected with each other; the motor vehicle backing radar controller (6) is connected with the audio host (1) and used for sending the obstacle distance information to the audio host (1); and the audio host (1) is used for receiving the obstacle distance information, selecting the signal indication representing the obstacle distance and driving the loudspeaker (4) to make an prompting sound representing the obstacle distance. In the embodiments of the utility model, the obstacle azimuth information is determined by using the prompting sound when the motor vehicle is parked, thus the driver can conveniently and rapidly judge the obstacle position to avoid the collision and the damage of the motor vehicles during the parking.