
The percentage of tint or shading on car mirrors and windows, including sun stickers or decals, is subject to regulations that vary by country, state, or region. These regulations are typically designed to ensure driver visibility and safety while balancing the desire for privacy and protection from the sun.

In many places, there are specific regulations governing the amount of visible light that can pass through vehicle windows and mirrors. This is often referred to as Visible Light Transmission (VLT) percentage. The VLT percentage indicates how much light is allowed to pass through the window or mirror.
While sun stickers or decals on mirrors are not as common as window tint, they can still potentially affect visibility. Therefore, if you are considering applying a sun sticker to your car’s mirrors, it’s essential to check your local regulations regarding VLT percentages and any specific rules related to stickers or decals on mirrors.

These regulations can vary widely. In some places, there may not be specific regulations for mirror stickers, while others may have strict rules regarding what is allowed. To find out the specific requirements for your area, you can:

Contact your local Department of Motor Vehicles (DMV) or equivalent agency.
Check your vehicle’s owner’s manual for any guidance on window and mirror tinting.
Consult local laws and regulations related to vehicle modifications and window tinting.
In summary, the allowable percentage of sun sticker or any other material on your car mirrors may vary depending on where you live. To ensure compliance with local regulations, it’s important to research and follow the specific guidelines in your area.