The Mercedes-Benz S-Class Long (V222) S 500 V8 4MATIC, 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 M278 4.7-liter twin-turbocharged V8 engine producing 455 horsepower and paired with the 9G-TRONIC nine-speed automatic transmission and Mercedes’ 4MATIC all-wheel drive system, was positioned as a high-performance, top-tier offering within the S-Class lineup. The “Long” designation indicates an extended wheelbase, providing significantly increased rear passenger legroom, catering to buyers prioritizing rear-seat comfort and prestige. This model aimed to combine the S-Class’s renowned ride quality with substantial power and all-weather capability.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class Long (V222) |
| Type (Engine) | S 500 V8 (455 Hp) 4MATIC 9G-TRONIC |
| Start of production | February, 2016 |
| End of production | May, 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption (economy) – urban (NEDC) | 11.8-12.3 l/100 km (19.9 – 19.1 US mpg, 23.9 – 23 UK mpg, 8.5 – 8.1 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 6.8-7.6 l/100 km (34.6 – 30.9 US mpg, 41.5 – 37.2 UK mpg, 14.7 – 13.2 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 8.7-9.3 l/100 km (27 – 25.3 US mpg, 32.5 – 30.4 UK mpg, 11.5 – 10.8 km/l) |
| CO2 emissions (NEDC) | 202-216 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.8 sec |
| Acceleration 0 – 62 mph | 4.8 sec |
| Acceleration 0 – 60 mph | 4.6 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4.4 kg/Hp, 228.1 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 350.9 Nm/tonne |
| Power | 455 Hp @ 5250-5500 rpm |
| Torque | 700 Nm @ 1800-3500 rpm (516.29 lb.-ft. @ 1800-3500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 278.929 |
| Engine displacement | 4663 cm3 (284.55 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.9 mm (3.66 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 12.1 l (12.79 US qt | 10.65 UK qt) |
| Kerb Weight | 1995 kg (4398.22 lbs.) |
| Max. weight | 2750 kg (6062.71 lbs.) |
| Max load | 755 kg (1664.49 lbs.) |
| Trunk (boot) space – minimum | 530 l (18.72 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 85 kg (187.39 lbs.) |
| Length | 5246 mm (206.54 in.) |
| Width | 1899 mm (74.76 in.) |
| Width including mirrors | 2130 mm (83.86 in.) |
| Height | 1497 mm (58.94 in.) |
| Wheelbase | 3165 mm (124.61 in.) |
| Front track | 1624 mm (63.94 in.) |
| Rear (Back) track | 1637 mm (64.45 in.) |
| Front overhang | 888 mm (34.96 in.) |
| Rear overhang | 1193 mm (46.97 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 12.3 m (40.35 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension, Transverse stabilizer, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
At the heart of the S 500 V8 4MATIC lies the M278 4.7-liter V8 engine. This engine utilizes direct fuel injection and twin turbochargers to deliver a potent combination of power and efficiency. The M278 engine family is known for its robust construction and sophisticated technology, including features like cylinder deactivation (allowing it to run on four cylinders under light load) and a multi-spark ignition system. The 9G-TRONIC nine-speed automatic transmission, a hallmark of Mercedes-Benz engineering, provides smooth and efficient gear changes. Its wide gear ratio spread contributes to both improved fuel economy and enhanced acceleration. The 4MATIC all-wheel-drive system employs a multi-plate clutch to distribute torque between the front and rear axles, providing superior traction in various driving conditions.
Driving Characteristics
The S 500 V8 4MATIC delivers a driving experience characterized by effortless power and exceptional refinement. The twin-turbo V8 provides ample torque throughout the rev range, resulting in strong acceleration in any gear. While not as overtly sporty as some of its competitors, the S-Class prioritizes a smooth, comfortable ride. The 9G-TRONIC transmission is virtually imperceptible in its shifts, contributing to the overall sense of serenity. Compared to the S 550 with its naturally aspirated V8, the S 500 offers quicker response due to the turbochargers. Against diesel variants like the S 350 d, the S 500 provides significantly more outright power, but at the expense of fuel economy. The all-wheel-drive system inspires confidence in inclement weather, providing enhanced stability and control.
Equipment & Trim Levels
The S 500 V8 4MATIC came standard with a comprehensive array of luxury features, befitting its flagship status. These included leather upholstery, heated and ventilated front seats with massage functions, a premium Burmester surround sound system, a large infotainment display with navigation, and a suite of advanced driver-assistance systems such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included rear-seat entertainment systems, a panoramic sunroof, and various interior trim upgrades. The extended wheelbase provided significantly more rear legroom, making it a popular choice for chauffeured transport.
Chassis & Braking
The S-Class Long (V222) utilized an advanced chassis design featuring an independent multi-link suspension at all four corners, coupled with Mercedes’ AIRMATIC air suspension system. This system automatically adjusts the suspension damping and ride height to optimize comfort and handling. The S 500 V8 4MATIC was equipped with ventilated disc brakes on all wheels, providing ample stopping power. The electronic stability program (ESP) and anti-lock braking system (ABS) worked in conjunction to enhance safety and control.
Market Reception & Comparison
The S 500 V8 4MATIC was generally well-received by automotive critics, who praised its luxurious interior, powerful engine, and refined driving experience. However, some reviewers noted that the ride, while comfortable, could feel slightly detached compared to more focused performance sedans. Compared to the S 400 Hybrid, the S 500 offered significantly more performance but lower fuel economy. Against rivals like the BMW 750i and Audi A8, the S 500 was often seen as offering a more opulent and technologically advanced experience.
Legacy
The M278 engine, while complex, has proven to be relatively reliable when properly maintained. Common issues include occasional turbocharger failures and oil leaks. The 9G-TRONIC transmission is generally robust, but some owners have reported minor software glitches. Today, the S 500 V8 4MATIC (V222) represents a compelling value on the used car market, offering a significant amount of luxury and performance for the price. Its advanced technology and comfortable ride continue to appeal to buyers seeking a premium full-size sedan.
