The Mercedes-Benz S 500 V8 (455 Hp) 4MATIC, produced from 2016 to 2017, represents a significant iteration within the W222 generation of the S-Class. This model occupied a premium position in the S-Class lineup, positioned above the S 400 Hybrid and S 500 rear-wheel drive models, but below the ultra-luxury S 600 and performance-oriented AMG variants. It combined a powerful twin-turbocharged V8 engine with Mercedes-Benz’s 4MATIC all-wheel-drive system and the advanced 9G-TRONIC nine-speed automatic transmission, offering a blend of performance, comfort, and all-weather capability. The W222 S-Class, launched in 2013, was a technological showcase for Mercedes-Benz, introducing numerous innovations in safety, driver assistance, and interior refinement.
Powertrain & Engine Architecture
The heart of the S 500 V8 4MATIC is the M278.929 engine, a 4.663-liter (284.55 cubic inches) V8 engine. This engine utilizes direct fuel injection and is equipped with two turbochargers, along with intercooling, to deliver a substantial 455 horsepower at 5250-5500 rpm and 700 Nm (516.29 lb-ft) of torque between 1800-3500 rpm. The engine boasts a power-to-liter ratio of 97.6 hp/l. The valvetrain is a Double Overhead Camshaft (DOHC) configuration with four valves per cylinder. The M278 engine family is known for its robust construction and sophisticated engine management system. It also incorporates a Start & Stop system to improve fuel efficiency.
The 9G-TRONIC automatic transmission is a key component of this powertrain. This nine-speed automatic transmission provides a wide range of gear ratios, contributing to both improved fuel economy and enhanced acceleration. The transmission is electronically controlled and features smooth, quick shifts. It’s designed to work seamlessly with the 4MATIC all-wheel-drive system, distributing power to all four wheels for optimal traction. The transmission’s gear ratios are optimized for both comfortable cruising and responsive performance.
Fuel Injection and Turbocharging
The direct injection system precisely meters fuel into the combustion chambers, maximizing efficiency and reducing emissions. The twin-turbocharger setup provides increased airflow to the engine, boosting power output. The intercoolers cool the compressed air from the turbochargers, further enhancing performance. This combination of technologies allows the engine to deliver strong torque across a broad rev range.
Driving Characteristics
The S 500 V8 4MATIC delivers a refined and powerful driving experience. Acceleration from 0 to 100 km/h (0-62 mph) takes just 4.8 seconds, and 0-60 mph is achieved in approximately 4.6 seconds. The electronically limited top speed is 250 km/h (155.34 mph). The 9G-TRONIC transmission ensures smooth and almost imperceptible gear changes, contributing to a comfortable ride. The 4MATIC all-wheel-drive system provides excellent grip and stability, particularly in adverse weather conditions. Compared to the rear-wheel-drive S 500, the 4MATIC version offers enhanced traction and handling, although it does carry a slight weight penalty.
The wide range of gear ratios in the 9G-TRONIC transmission allows the engine to operate efficiently at highway speeds, contributing to good fuel economy for a vehicle of this size and performance. The power delivery is linear and predictable, making the S 500 V8 4MATIC easy to drive in a variety of situations. While not as overtly sporty as the AMG-tuned S-Class models, the S 500 V8 4MATIC provides ample power for confident overtaking and spirited driving.
Equipment & Trim Levels
The S 500 V8 4MATIC came standard with a comprehensive array of luxury features. Standard interior appointments included high-quality leather upholstery, wood trim, and a premium sound system. The S-Class was renowned for its spacious and comfortable interior, offering ample legroom and headroom for both front and rear passengers. Standard features also included a multi-function steering wheel, power-adjustable seats with memory function, dual-zone automatic climate control, and a comprehensive suite of safety features.
Optional extras were plentiful, allowing buyers to customize their S 500 V8 4MATIC to their specific preferences. These options included features such as a panoramic sunroof, rear-seat entertainment system, massaging seats, a Burmester surround sound system, and advanced driver assistance systems like Distronic Plus with Steering Assist. The S-Class also offered a variety of interior color and trim combinations, allowing for a high degree of personalization.
Chassis & Braking
The S 500 V8 4MATIC features an air suspension system on both the front and rear axles. This air suspension provides a remarkably smooth and comfortable ride, automatically adjusting to road conditions to minimize bumps and vibrations. The suspension also offers adjustable ride height, allowing drivers to raise or lower the vehicle for improved comfort or ground clearance. The chassis is designed to provide a balance of comfort and handling, with a focus on minimizing body roll and maximizing stability.
The braking system consists of ventilated discs on all four wheels. The anti-lock braking system (ABS) is standard, providing enhanced braking performance and control. The S 500 V8 4MATIC also features electronic brake-force distribution and brake assist, further enhancing safety. The steering system is a rack-and-pinion type with electric power steering, providing precise and responsive steering feel.
Market Reception & Comparison
The S 500 V8 4MATIC was generally well-received by automotive critics. It was praised for its powerful engine, smooth ride, luxurious interior, and advanced technology. The 4MATIC all-wheel-drive system was seen as a significant advantage, particularly in regions with inclement weather. Fuel economy figures ranged from 8.7-9.3 l/100 km (27-25.3 US mpg, 32.5-30.4 UK mpg), which was considered respectable for a vehicle of this size and performance.
Compared to the S 400 Hybrid, the S 500 V8 4MATIC offered significantly more power and performance, but at the expense of fuel economy. Compared to the S 600, the S 500 V8 4MATIC provided a similar level of luxury and comfort, but with a slightly less powerful engine. The S 500 V8 4MATIC represented a sweet spot in the S-Class lineup, offering a compelling combination of performance, luxury, and all-weather capability.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-Class |
| Generation | S-Class (W222) |
| Type | S 500 V8 (455 Hp) 4MATIC 9G-TRONIC |
| Start of production | 2016 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 4-5 |
| Doors | 4 |
| Fuel consumption (urban) | 11.8-12.3 l/100 km (19.9 – 19.1 US mpg) |
| Fuel consumption (extra urban) | 6.8-7.6 l/100 km (34.6 – 30.9 US mpg) |
| Fuel consumption (combined) | 8.7-9.3 l/100 km (27 – 25.3 US mpg) |
| CO2 emissions | 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) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4.3 kg/Hp |
| Weight-to-torque ratio | 2.8 kg/Nm |
| 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.) |
| 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 | 1975 kg (4354.13 lbs.) |
| Max. weight | 2715 kg (5985.55 lbs.) |
| Max load | 740 kg (1631.42 lbs.) |
| Trunk (boot) space | 530 l (18.72 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Permitted trailer load with brakes | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 5116 mm (201.42 in.) |
| Width | 1899 mm (74.76 in.) |
| Height | 1496 mm (58.9 in.) |
| Wheelbase | 3035 mm (119.49 in.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
Legacy
The M278 engine, as found in the S 500 V8 4MATIC, has proven to be a relatively reliable powertrain. While some early models experienced issues with oil consumption, these were largely addressed through software updates and revised piston ring designs. The 9G-TRONIC transmission has also demonstrated good durability, although regular fluid changes are essential for maintaining optimal performance.
On the used car market, the 2016-2017 S 500 V8 4MATIC remains a desirable option for buyers seeking a luxurious and capable grand tourer. Values are influenced by mileage, condition, and options, but generally hold up well due to the S-Class’s reputation for quality and prestige. The combination of performance, comfort, and all-weather capability continues to make this model a compelling choice in the luxury sedan segment.
