The Mercedes-Benz S-Class Long (V221) S 500 4MATIC, produced from 2005 to 2009, represented the pinnacle of luxury and technology for the German automaker. This extended-wheelbase variant of the V221 generation S-Class was primarily aimed at markets where rear passenger space was highly valued, offering a more opulent experience than the standard wheelbase model. Equipped with a 5.5-liter V8 engine producing 388 horsepower and paired with a 7G-TRONIC automatic transmission and all-wheel drive, the S 500 4MATIC occupied a premium position within the S-Class lineup, positioned above the S 350 and S 450 models but below the higher-performance S 600 and S 63 AMG.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-Class |
| Generation | S-Class Long (V221) |
| Type | S 500 (388 Hp) 4MATIC 7G-TRONIC |
| Start of production | 2005 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 18.1-18.3 l/100 km (13-12.9 US mpg) |
| Fuel consumption (extra urban) | 8.9-9.1 l/100 km (26.4-25.8 US mpg) |
| Fuel consumption (combined) | 12.2-12.4 l/100 km (19.3-19 US mpg) |
| CO2 emissions | 291-296 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0-100 km/h | 5.4 sec |
| Acceleration 0-60 mph | 5.1 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 5.1 kg/Hp |
| Weight-to-torque ratio | 3.7 kg/Nm |
| Power | 388 Hp @ 6000 rpm |
| Torque | 530 Nm @ 2800 rpm (390.91 lb.-ft. @ 2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 273.968 |
| Engine displacement | 5461 cm3 (333.25 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 98 mm (3.86 in.) |
| Piston Stroke | 90.5 mm (3.56 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Coolant capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 1980 kg (4365.15 lbs.) |
| Max. weight | 2640 kg (5820.2 lbs.) |
| Max load | 660 kg (1455.05 lbs.) |
| Trunk (boot) space | 560 l (19.78 cu. ft.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Length | 5209 mm (205.08 in.) |
| Width | 1872 mm (73.7 in.) |
| Width including mirrors | 2115 mm (83.27 in.) |
| Height | 1473 mm (57.99 in.) |
| Wheelbase | 3165 mm (124.61 in.) |
| Front track | 1604 mm (63.15 in.) |
| Rear track | 1606 mm (63.23 in.) |
| Front overhang | 871 mm (34.29 in.) |
| Rear overhang | 1173 mm (46.18 in.) |
| Minimum turning circle | 12.2 m (40.03 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Air suspension |
| Rear suspension | Air suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 235/55 R17 |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
The heart of the S 500 4MATIC was the M273.968 5.5-liter naturally aspirated V8 engine. This engine featured all-aluminum construction, three valves per cylinder, and a sophisticated multi-point fuel injection system. The M273 engine was known for its smooth power delivery and relatively high specific output. The 7G-TRONIC automatic transmission, a seven-speed unit, was a key component of the powertrain. It offered smooth and quick shifts, contributing to both performance and fuel efficiency. The 4MATIC all-wheel-drive system provided enhanced traction and stability, particularly in inclement weather conditions. The system operated with a rear-wheel bias, maintaining a more traditional Mercedes-Benz driving feel.
Driving Characteristics
The S 500 4MATIC offered a refined and comfortable driving experience. The combination of the powerful V8 engine and the smooth-shifting 7G-TRONIC transmission resulted in brisk acceleration – 0 to 60 mph in approximately 5.1 seconds. While not as overtly sporty as some of its rivals, the S 500 provided ample power for effortless cruising and overtaking. Compared to the S 350, the S 500 offered a significant performance upgrade. The S 600, with its turbocharged V12, provided even greater power, but at a substantial price premium. The air suspension system contributed to a remarkably smooth ride, effectively isolating passengers from road imperfections.
Equipment & Trim Levels
The S 500 4MATIC came standard with a comprehensive array of luxury features, including leather upholstery, wood trim, dual-zone automatic climate control, a premium sound system, and power-adjustable front seats with memory function. The extended wheelbase provided significantly more rear legroom, enhancing the comfort of rear passengers. Optional extras included a rear entertainment system, massaging seats, a panoramic sunroof, and advanced driver-assistance systems such as Distronic adaptive cruise control and Parktronic parking assist.
Chassis & Braking
The V221 S-Class featured an advanced chassis design with an independent suspension at all four corners. The air suspension system, standard on the S 500 4MATIC, allowed for adjustable ride height and damping settings. Ventilated disc brakes were fitted on all four wheels, providing ample stopping power. The anti-lock braking system (ABS) and electronic stability program (ESP) were standard safety features.
Market Reception & Comparison
The S 500 4MATIC was generally well-received by automotive critics, who praised its luxurious interior, comfortable ride, and powerful engine. However, its fuel consumption was often cited as a drawback. Compared to the S 350, the S 500 offered a noticeable performance advantage, but at a higher price point. The S 600 provided even more power and luxury, but its significantly higher cost limited its appeal to a smaller segment of the market. Reliability was generally good, although some owners reported issues with the air suspension system and electronic components.
Legacy
The V221 S-Class, including the S 500 4MATIC, established a new benchmark for luxury and technology in the full-size sedan segment. While later generations of the S-Class have surpassed it in terms of innovation and performance, the V221 remains a desirable vehicle in the used car market. The M273 engine, while not the most fuel-efficient, is generally considered to be a reliable and durable powerplant when properly maintained. The S 500 4MATIC continues to offer a compelling combination of luxury, performance, and comfort, making it a popular choice for discerning buyers seeking a high-end sedan.
