Window tinting is allowed by Article 72 of the Rulebook on Classification of Motor Vehicles and Towed Vehicles and Technical Conditions for Vehicles in Road Traffic which came into force on April 25, 2012.
All windows behind the door post (rear side windows and rear windshield) can subsequently be tinted without limits, while windows at the driver level can subsequently be tinted up to 30% (it used to be 25%). The front windshield is not tinted.
Tinting driver level windows that were factory tinted, in combination with the lightest film (having the same heat and UV protection as the darker films) conform to the legal framework (up to 30%).
For the films installed in line with this Rulebook, TECHNICAL APPROVAL CERTIFICATES on visible light transmission of the films are issued.
The complete Rulebook can be downloaded here: