Is it necessary to apply window film on factory-installed privacy glass?

[DiKate]

It is necessary to apply window film even if the car comes with factory-installed privacy glass, because car window film offers additional benefits that privacy glass alone cannot provide. Functions of car window film: Heat insulation: When two cars are parked under the same intense sunlight, there's a significant temperature difference between a car with window film and one without. This is because the film can block a portion of UV rays, which consequently reduces heat transmission and lowers the interior temperature. Besides protecting the dashboard and seats from UV damage, window film can also improve fuel efficiency. This is because higher interior temperatures require the air conditioning compressor to work harder, consuming more fuel. Introduction to privacy glass: Privacy glass refers to side windows (typically rear passenger windows) that are tinted with a special coating, creating a darker appearance. This enhances passenger privacy while simultaneously blocking sunlight, providing a safer and more comfortable cabin environment.