The 2023 Mercedes-AMG C63 performance sedan has been teased, ahead of its imminent debut on September 22. As reported, the BMW M3 rival will replace its previous twin-turbo V8 with a new four-cylinder plug-in hybrid setup, adopting the E-Performance moniker from the GT 63 S hybrid . The Heart Of the Matter. The C43’s new turbocharged 2.0-litre mild-hybrid four-cylinder is the same mill from the CLA 45, an AMG-specific engine built in Affalterbach by a single technician (unlike the last-gen V6). Engineers rotated the engine 90 degrees, for a longitudinal fitment and added a new electric exhaust gas turbocharger. Eb3iJi.