In Gran Turismo 4, the characteristics of the cars are realistically designed and calculated so that they handle to the "real life" physics of that particular vehicle, taking into account weight, speed, friction, wind, and more. Courses include various sites such as Nurburgring Nordschleife, New York City, the Grand Canyon, Tsukuba Circuit, and more. Highly detailed vehicles and environment mapping create broadcast-quality graphics, with light and competitor car reflections on

1. New physics engine adding a higher level of realism in cars, which allows for cars to be handled easier.
2. More than 5,000 polygons per vehicle capture exceptional detail, right down to the disc brakes behind the wheel.
3. Up to 100 courses including Nurburgring, New York City, the Grand Canyon, Tsukuba Circuit, Fuji Speedway, Citta di Aria, Hong Kong, Costa di Amalfi and others. Includes courses that can be played in reverse mode.
4. More than 500 vehicles encompassing manufacturers from around the world with a range from vintage to modern models seen today.
5. All vehicles are fully customizable from racing tires to gear ratio.
6. Race opponents posses advanced artificial intelligence, which allows for behavior that captures human-like emotion.
7. Refined replay mode with broadcast-quality graphics.
8. Compatible with the Logitech Driving Force Pro Wheel – To further enhance the automotive racing experience, in lieu of the DUALSHOCK2 analog controller, the Logitech Driving Force Pro can be used for the entire game. Available in black with brushed aluminum accents, the Gran Turismo branded GT Force Wheel provides a shifter for manual transmissions, 900 degrees of steering rotation and force-feedback.
9. Four race modes.

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· Review 9.2