The AMG 12J2 is a high-performance engine developed by the German automobile manufacturer Mercedes-AMG. It is a 6.2-liter V12 engine that produces an impressive 750 horsepower and 730 lb-ft of torque. It is primarily used in the limited production Mercedes-AMG One hypercar, which has a top speed of over 218 mph. The AMG 12J2 engine features advanced technologies like cylinder deactivation, dry sump oil lubrication, and a dual-clutch transmission system that allows for precise gear changes. It is also equipped with advanced aerodynamics, anti-lock brakes (ABS), and traction control (ASR) systems to ensure optimal handling and safety. Overall, the AMG 12J2 is a testament to the company's commitment to pushing the boundaries of automotive engineering and performance.