The Acura AR24e power unit was developed by Honda Performance Development. The complete hybrid power unit is based around the Acura AR24e internal combustion engine (ICE), an all-new custom 2.4-liter, twin-turbocharged direct injection racing V6 that was designed, developed and manufactured by HPD. At 2.4 liters, this is the smallest displacement ICE conceived by HPD for endurance racing, yet still meets the performance target of 500 kW as measured at the rear axle by torque meters. It has a 90-degree V-angle to reduce its center of gravity and polar moment of inertia. In addition, the combustion chamber has been designed to run on sustainable low-carbon fuel.