Forza Horizon Hub
2025 GR GT Prototype, a S1 class car in Forza Horizon 6

GR

GT Prototype

2025 · Super GT · Japan

S1

771

Stock PI

Class
S1
Performance Index
771
Drivetrain
RWD
Power
700 bhp
Torque
645 lb-ft
Aspiration
Twin-Turbo
Engine
4.0L Twin-Turbo V8
Weight
1725 kg
Category
Super GT
Origin
Japan
Year
2025
Rarity
Legendary
Value
250,000 cr
How to unlock
Autoshow / Wheelspin / Hard to Find

Stock ratings

Speed
7.9
Handling
6.4
Accel
6.8
Launch
7.4
Braking
7.4
Offroad
5.0
Confirmed class data

Engine, drivetrain and power reflect the real world car. In-game class and PI are stock values and may shift with game updates and tuning.