Displacement: 2,999 cc
The 2026 S 500 is powered by a 3.0-liter turbocharged inline-six engine (M256). It features an integrated starter-generator (ISG) that utilizes a 48-volt electrical system to provide a seamless "EQ Boost," assisting with fuel efficiency and transient response by providing an additional 21 bhp and 184 lb-ft of torque.
Max Power: 442 bhp
The internal combustion engine produces 442 bhp at 5,800–6,100 rpm. When combined with the mild-hybrid electric assistance, the powertrain delivers effortless acceleration, allowing the flagship sedan to sprint from 0-100 km/h in approximately 4.8 seconds.
Max Torque: 560 Nm
Peak torque is available across a broad rev range (2,200–5,000 rpm). The inclusion of an electric auxiliary compressor ensures that boost pressure is available almost instantly, virtually eliminating turbo lag for a "wafting" driving sensation.
Gearbox Type: 9G-TRONIC (9-Speed Automatic)
The 9G-TRONIC transmission is engineered for maximum comfort and efficiency. Its wide gear ratio spread allows for extremely low engine speeds during highway cruising, significantly reducing cabin noise and vibration.
