When should a vehicle’s rearview mirror be replaced?

A vehicle’s rearview mirror should be replaced if it shows signs of damage or no longer stays in place. Over time, mirrors can become scratched, clouded, or damaged, which hampers visibility and can create safety hazards while driving. If the mirror is loose or fails to hold its position, it can also disrupt the driver's ability to see clearly behind the vehicle, leading to potential accidents. Regular checks of the rearview mirror's condition are essential for maintaining optimal visibility and safety.

The other choices suggest less reliable criteria for replacing the mirror. Some of them imply an inconsistency in judgment by only emphasizing damage or arbitrary timelines that may not align with the actual wear and tear a mirror may experience. Prioritizing the functionality and visual clarity of the rearview mirror is critical for safe driving practices.