Gran Turismo is a racing game. The player must maneuver a car to compete against artificially intelligent drivers on various race tracks. It is not possible for cars to take damage in the game. Gran Turismo was the first game designed to fully support the PlayStation's DualShock controller. This includes both the analogue control and rumble support.

The game uses two different modes: Arcade Mode and Simulation Mode (Gran Turismo Mode in PAL and Japanese versions). In the arcade mode, the player can freely choose the courses and vehicles they wish to use. Winning races unlocks additional cars and courses.

However, simulation mode requires the player to earn different levels of driver's licenses in order to participate in events, and earn credits (money), trophies and prize cars by winning race championships. Winning one particular championship also unlocks a video and a few additional demonstration tracks. Credits can be used to purchase additional vehicles, and for parts and tuning.