The C63 and C63 S both feature the latest bi-turbo AMG V8, 4-liters in displacement and offering power in two outputs. 469hp and 479 lb-ft are on tap in the standard 63, while the S bumps those In the case of the highest-performing Mercedes-Benz C-Class, the official name is: 2020 AMG C63 S. The AMG C63 S’ hand-built 4.0-liter V8 makes 503 hp and 516 lb-ft of torque. Karl Brauer AMG AWD for All. Every 2021 Mercedes-Benz C-Class AMG model will have AWD. The current C 43 models already do, and the next-gen C 63's replacement should get a rear-biased AWD system with a drift Xdvi6i.