A vehicle outside mirror device comprising: a base that is fixed to a vehicle body; an electrically driven storage unit; and a mirror assembly that is rotatably mounted to the base via the electrically driven storage unit, wherein the electrically driven storage unit comprises: a shaft that is fixed to the base; a casing which is rotatably mounted to the shaft, and to which the mirror assembly is mounted; a buffering mechanism; a lock mechanism (56, 57); a motor; and a rotation force transmission mechanism (14, 15), wherein the buffering mechanism is a mechanism which is made of: a first member; a second member that is the casing; and a spring, and in which a notch portion (47, 48; 53, 54) is provided in a respective one of the first member and the second member, when the mirror assembly is positioned between a use location and a storage location by means of an electrically driven rotation, the notch portion (47, 48) of the first member and the notch portion (53, 54) of the second member are caused to engage with each other by means of a spring force of the spring, and when the mirror assembly rotates forward from the use location with respect to the shaft for buffering, the notch portion (53, 54) of the second member runs aground the notch portion (47,48) of the first member against the spring force of the spring, and wherein the lock mechanism (56, 57) is a mechanism configured to lock the first member from rotating in a direction from the forward tilt location to the use location with respect to the shaft when the mirror assembly is positioned between the use location and a forward tilt location and to release the locked state when the mirror assembly is restored from the forward tilt location to the use location. a base that is fixed to a vehicle body; an electrically driven storage unit; and a mirror assembly that is rotatably mounted to the base via the electrically driven storage unit, wherein the electrically driven storage unit comprises: a shaft that is fixed to the base; a casing which is rotatably mounted to the shaft, and to which the mirror assembly is mounted; a buffering mechanism; a lock mechanism (56, 57); a motor; and a rotation force transmission mechanism (14, 15), wherein the buffering mechanism is a mechanism which is made of: a first member; a second member that is the casing; and a spring, and in which a notch portion (47, 48; 53, 54) is provided in a respective one of the first member and the second member, when the mirror assembly is positioned between a use location and a storage location by means of an electrically driven rotation, the notch portion (47, 48) of the first member and the notch portion (53, 54) of the second member are caused to engage with each other by means of a spring force of the spring, and when the mirror assembly rotates forward from the use location with respect to the shaft for buffering, the notch portion (53, 54) of the second member runs aground the notch portion (47,48) of the first member against the spring force of the spring, and wherein the lock mechanism (56, 57) is a mechanism configured to lock the first member from rotating in a direction from the forward tilt location to the use location with respect to the shaft when the mirror assembly is positioned between the use location and a forward tilt location and to release the locked state when the mirror assembly is restored from the forward tilt location to the use location.