The Mercedes-Benz AMG S 63 is the perfect mix of supercar-rivalling performance and luxury befitting of an upmarket limousine. In fact, this isn't just an S-Class with a big engine; the Mercedes-Benz AMG S 63 2025 is now a plug-in hybrid that fuses AMG’s motorsport DNA with the opulence of the S-Class. Under its elegant exterior lies a hand-built V8 and an electric motor. It's the most powerful S-Class ever made and even among the most luxurious performance-oriented sedans ever.