An interior rearview mirror assembly for a vehicle includes a reflective element and at least one attachment plate attached thereto. The attachment plate has first and second mounting members protruding therefrom. A mounting assembly is configured to mount the mirror assembly to an interior portion of the vehicle. The mounting assembly includes a toggle portion and a cam actuator, with the toggle portion pivotally mounting to the first mounting member and the cam actuator pivotally mounting to the second mounting member. The toggle portion engages the cam actuator such that pivotal movement of the cam actuator relative to the second mounting member imparts a pivotal movement of the toggle portion relative to the first mounting member. The attachment plate may include at least one mounting member protruding through a circuit board for engaging a mounting assembly that mounts the mirror assembly to an interior portion of the vehicle.