The Mercedes S400Lh is a luxury hybrid saloon featuring a 3.5L V6 engine and electric motor, offering a smooth, powerful, and quiet ride. Key features include a long-wheelbase ("L") for extra rear legroom, a high-quality interior with premium materials, and advanced driver-assistance systems like adaptive cruise control and blind-spot assist. It's often equipped with a G-Tronic+ automatic transmission, air suspension, and a COMAND Online infotainment system with satellite navigation. “Performance and engineering” Engine: 3.5L V6 petrol hybrid Power: Approximately 328 bhp (or 245 kW) combined output Torque: Approximately 400 Nm Transmission: G-Tronic+ automatic Acceleration: 0-62 mph in about 6.8 seconds Suspension: Airmatic air suspension with adaptive damping for a comfortable ride Fuel Economy: Combined figures around 44.80 mpg (note that older test cycles may have overstated real-world efficiency) “Interior and technology” Cabin: High-quality materials, including leather, and a luxurious, quiet atmosphere Rear Space: "L" designation indicates a long-wheelbase chassis, providing significantly more rear legroom Infotainment: COMAND Online system with a 12.3-inch display, satellite navigation, and other features Comfort: Heated and electrically adjustable front seats, with many models also featuring heated rear seats and rear electric blinds Technology: Bluetooth interface for hands-free calls, and often includes features like a rear-view camera and parking sensors “Safety and driver assistance” Key Systems: Active Park Assist, Blind Spot Assistance, Adaptive Cruise Control, and Collision Prevention Assist Airbags: Multiple airbags, including front, rear, and window airbags Other Safety Features: Attention Assist, ESP, Active Bonnet, and adaptive brake lamps