The Mercedes-Benz GLC 63 S AMG 4MATIC E-performance Coupe was a variant of the C254 GLC-Class that debuted for the 2023 model year. It was powered by Mercedes' M139 engine which was 2.0L Plug-In E-Turbo inline four that generated 671hp and 1020lb⋅ft of torque, sending power to all four wheels through a 9-speed automatic transmission.