An automotive exterior member comprising a mounting structure for attaching the exterior member to an outer surface of an outer panel defining an exterior surface of a vehicle body, wherein: an attached state is a state of the exterior member in which the exterior member is attached to the outer surface of the outer panel; the exterior member comprises a rear side opposing, in the attached state, the outer surface of the outer panel at a certain distance and a mounting portion projecting from the rear side of the exterior member toward the outer panel in the attached state for securing the exterior member to the outer panel; characterized in that the mounting portion includes a base end portion projecting from the rear side toward the outer surface of the outer panel in the attached state, a projecting end portion projecting from the base end portion toward the outer panel in the attached state and configured to be connected to the outer surface of the outer panel and a connecting portion connecting the projecting end portion with the base end portion; and the connecting portion is configured to be mechanically weaker than the base end portion and the projecting end portion against a crash load directed in a projecting direction of the mounting portion, wherein the projecting end portion and the base end portion are provided with wall parts (10a, 10b, 10c, 8a, 8b, 8c), respectively, that extend in the projecting direction and are joined to each other via the connecting portion, the connecting portion including a wall part (9a, 9b, 9c) that extends from the wall part (8a, 8b, 8c) of the base end portion at an angle to the projecting direction, wherein the exterior member consists of a garnish provided with a peripheral flange extending, in the attached state, toward the outer panel, and a part of the wall part of the base end portion is formed by the peripheral flange, and wherein the connecting portion is connected to a bent part of the peripheral flange that is formed as an inverted V-shaped groove by being recessed inward. an attached state is a state of the exterior member in which the exterior member is attached to the outer surface of the outer panel; the exterior member comprises a rear side opposing, in the attached state, the outer surface of the outer panel at a certain distance and a mounting portion projecting from the rear side of the exterior member toward the outer panel in the attached state for securing the exterior member to the outer panel; characterized in that the mounting portion includes a base end portion projecting from the rear side toward the outer surface of the outer panel in the attached state, a projecting end portion projecting from the base end portion toward the outer panel in the attached state and configured to be connected to the outer surface of the outer panel and a connecting portion connecting the projecting end portion with the base end portion; and the connecting portion is configured to be mechanically weaker than the base end portion and the projecting end portion against a crash load directed in a projecting direction of the mounting portion, wherein the projecting end portion and the base end portion are provided with wall parts (10a, 10b, 10c, 8a, 8b, 8c), respectively, that extend in the projecting direction and are joined to each other via the connecting portion, the connecting portion including a wall part (9a, 9b, 9c) that extends from the wall part (8a, 8b, 8c) of the base end portion at an angle to the projecting direction, wherein the exterior member consists of a garnish provided with a peripheral flange extending, in the attached state, toward the outer panel, and a part of the wall part of the base end portion is formed by the peripheral flange, and wherein the connecting portion is connected to a bent part of the peripheral flange that is formed as an inverted V-shaped groove by being recessed inward.