Basic Field of View: The interior rearview mirror (flat mirror) provides a true-to-scale view directly behind the vehicle, while exterior mirrors (typically convex or dual-curvature) cover rear-side blind spots, aiding in lane changes, reversing, and judging following distances.
Anti-glare Function: Interior mirrors often feature automatic (electrochromic) or manual anti-glare designs to reduce glare from the high beams of vehicles behind at night.
Electric Adjustment and Folding: Supports multi-directional in-cabin adjustment of mirror angles; some models offer automatic folding upon locking and automatic unfolding upon starting/parking, enhancing convenience and protection against scratches or collisions.
Heating/Defrosting/Demisting: Exterior mirrors feature embedded heating elements to quickly clear moisture, frost, or ice during rain or snow, ensuring a clear view.
Blind Spot Detection (BSD): Exterior mirrors integrate radar or cameras to provide visual warnings (via mirror-mounted indicators) or audible alerts when vehicles are present in the rear-side blind spots.
Automatic Tilt-down in Reverse: When the vehicle is shifted into Reverse (R), the exterior mirror automatically tilts downward to assist in viewing the curb or parking space lines (commonly found on the passenger-side mirror).