Tinting the windows of cars is a common practice in Russia. The use of air conditioning in cars increases fuel consumption.
Tinting of the windows reduces the amount of light that can be seen by the driver. It also reduces the number of people who can see into the car from the driver's seat. It is a form of protection for the driver and the passenger from the sun. It reduces the risk of injury to the driver by reducing the amount that is visible from the front.