An interior rearview mirror assembly includes a mounting structure configured for mounting at an interior portion of a vehicle. A distal end portion of the mounting arm is at an angle relative to a proximal end portion of the mounting arm at the interior portion of the vehicle. An attaching element is fixedly disposed at the distal end portion. A mirror housing includes an aperture, and the mounting arm of the mounting structure passes through the aperture without making contact with the mirror housing. A reflective element is attached at an attachment plate disposed within the mirror housing. A motorized actuator is mounted at the attachment plate at the reflective element or at the attaching element at the distal end portion of the mounting arm. The motorized actuator is electrically operable to adjust the reflective element and the mirror housing together and in tandem relative to the mounting structure.