The utility model discloses a low-bonding-force multi-wire plug-in connector for an automobile, comprising terminals and sheaths. The terminals comprise plugs and sockets in a plug-in cooperation, and leads are connected to the plus and the sockets. The sheaths comprise a plug sheath disposed at the outer periphery of the plugs and a socket sheath disposed at the outer periphery of the sockets, one end of the plug sheath sleeves the outer periphery of the socket sheath, the plug sheath and the socket sheath are provided with terminal installing hole chambers, the plugs and the sockets are disposed in the hole chambers, and height differences are disposed among different sockets. The plug-in connector is a low-bonding-force multi-wire plug-in connector, and compared with a common multi-wire plug-in connector, the bonding force is reduced by about 30%. The low-bonding-force multi-wire plug-in connector is advantageous in that, no power-assisted mechanism is needed, and therefore, cost increase brought by adding of a power-assisted mechanism is not generated. The multi-wire plug-in connector is also advantageous in that, reduction of terminal bonding force is not required, and therefore, contact resistance enhancement caused by reduction of terminal bonding force is prevented.