2016-2017 Mercedes-Benz S-class Long (V222) S 500 V8 (455 Hp) 9G-TRONIC

The Mercedes-Benz S-Class Long (V222) S 500 V8, produced from February 2016 to May 2017, represents a pinnacle of luxury and technology within the W222 S-Class generation. This extended-wheelbase variant, specifically equipped with the 4.7-liter V8 engine and 9G-TRONIC nine-speed automatic transmission, was positioned as a high-end offering, bridging the gap between the S 400/500 models and the ultra-luxury S 600. The “Long” designation indicates an extended wheelbase, providing significantly increased rear passenger legroom, catering to markets where chauffeur-driven travel is common. This model was primarily aimed at discerning buyers seeking a blend of performance, comfort, and prestige.

Technical Specifications

Powertrain & Engine Architecture

The heart of the S 500 V8 is the M278.929 4.7-liter V8 engine. This engine utilizes direct injection and twin turbochargers to produce 455 horsepower and 516 lb-ft of torque. The engine features a DOHC valvetrain and a compression ratio of 10.5:1. The twin-turbo setup provides a broad torque curve, delivering strong acceleration throughout the rev range. Paired with this engine is the 9G-TRONIC nine-speed automatic transmission. This transmission is designed for smooth shifts and improved fuel efficiency, offering a wide range of gear ratios to optimize performance and economy. The transmission’s programming prioritizes comfort in the S-Class, with less aggressive shift points than sportier Mercedes-AMG models.

Driving Characteristics

The S 500 V8 Long delivers a refined and powerful driving experience. The 4.8-second 0-60 mph acceleration is impressive for a large luxury sedan. The 9G-TRONIC transmission contributes to smooth and almost imperceptible gear changes. Compared to the S 400/500 models with smaller engines, the V8 offers significantly more effortless power, particularly during overtaking maneuvers. While not as overtly sporty as the AMG variants, the S 500 provides ample performance for most drivers. The long wheelbase contributes to a comfortable ride, absorbing bumps and imperfections in the road effectively. The air suspension further enhances ride quality, automatically adjusting to road conditions.

Equipment & Trim Levels

The S 500 V8 Long came standard with a comprehensive array of luxury features. These included leather upholstery, heated and ventilated front seats with massage functions, a premium Burmester sound system, a large infotainment screen with navigation, and a panoramic sunroof. Optional extras included rear seat entertainment systems, upgraded leather packages, and various driver-assistance features such as adaptive cruise control, lane-keeping assist, and a 360-degree camera system. The interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize their vehicle.

Chassis & Braking

The S-Class Long utilizes an independent multi-link suspension system at both the front and rear, enhanced by Mercedes-Benz’s AIRMATIC air suspension. This system provides a comfortable ride and allows for adjustable ride height. The S 500 V8 is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) is standard, along with electronic stability control. The suspension is tuned for comfort, with stabilizer bars to minimize body roll during cornering.

Market Reception & Comparison

The S 500 V8 Long was generally well-received by automotive critics. It was praised for its luxurious interior, comfortable ride, and powerful engine. Compared to the S 400/500 models, the V8 offered a noticeable performance upgrade. However, the S 500 was more expensive and slightly less fuel-efficient. Against competitors like the BMW 7 Series and Audi A8, the S-Class was often lauded for its advanced technology and overall refinement. Fuel economy figures, averaging around 28.7 mpg combined, were respectable for a vehicle of this size and performance.

Legacy

The M278 engine, while complex, has proven to be relatively reliable with proper maintenance. Common issues include occasional turbocharger problems and oil leaks. The 9G-TRONIC transmission is generally robust, but some owners have reported minor software glitches. Today, the V222 S-Class S 500 V8 Long remains a desirable used luxury car. Its combination of performance, comfort, and technology continues to appeal to buyers seeking a high-end sedan. Values have depreciated from their original MSRP, making it a more accessible option for those seeking S-Class ownership. Regular maintenance, including oil changes and fluid checks, is crucial to ensure the long-term reliability of this sophisticated vehicle.