Searching for a " Gran Turismo 6 License Key" usually refers to one of two things: a Product Code for digital content/DLC or the in-game License Tests
, "licenses" are earned by completing sets of tests. These are mandatory to unlock higher-level races in Career Mode How to Unlock Tests: You must earn a specific number of
in your current race class before the next License Test becomes available. For example, the National A License requires earning 20 stars in National B events. Requirements for Passing: You need at least a