The Mercedes-AMG GTR is a performance-oriented variant of the Mercedes-AMG GT. It features a 4.0-liter twin-turbocharged V8 engine, producing 503 hp and 479 lb-ft of torque according to Motor Trend. The GT S is equipped with features not found on the standard GT, including an electronically controlled limited-slip differential, “Race Mode” and “Race Start” settings, an AMG Performance Exhaust System, and an adaptive suspension system.