The Mercedes-Benz S-Class Long (V221 facelift), specifically the S 350 4MATIC G-TRONIC variant, was produced from 2009 to 2011. This model represented a significant refinement of the V221 generation, offering a blend of luxury, technology, and performance aimed at the upper-premium segment of the automotive market. The “Long” designation indicates an extended wheelbase, providing increased rear passenger legroom – a particularly desirable feature in markets like China and increasingly, the United States. Positioned as a mid-range offering within the S-Class lineup during its production run, the S 350 4MATIC served as a more accessible entry point to the flagship sedan compared to the higher-performance S 550 or the ultra-luxury S 600 models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-Class |
| Generation | S-Class Long (V221, facelift 2009) |
| Type (Engine) | S 350 (272 Hp) 4MATIC G-TRONIC |
| Start of production | 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.7-15.1 l/100 km (16 – 15.6 US mpg, 19.2 – 18.7 UK mpg, 6.8 – 6.6 km/l) |
| Fuel consumption (extra urban) | 7.9-8.0 l/100 km (29.8 – 29.4 US mpg, 35.8 – 35.3 UK mpg, 12.7 – 12.5 km/l) |
| Fuel consumption (combined) | 10.3-10.6 l/100 km (22.8 – 22.2 US mpg, 27.4 – 26.6 UK mpg, 9.7 – 9.4 km/l) |
| CO2 emissions | 242-247 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.3 sec |
| Acceleration 0 – 62 mph | 7.3 sec |
| Acceleration 0 – 60 mph | 6.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 6.9 kg/Hp, 144.7 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 186.2 Nm/tonne |
| Power | 272 Hp @ 6000 rpm |
| Power per litre | 77.8 Hp/l |
| Torque | 350 Nm @ 2400-5000 rpm (258.15 lb.-ft. @ 2400-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 272.965 |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Compression ratio | 10.7:1 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1880 kg (4144.69 lbs.) |
| Max. weight | 2610 kg (5754.07 lbs.) |
| Max load | 730 kg (1609.37 lbs.) |
| Trunk (boot) space – minimum | 560 l (19.78 cu. ft.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Length | 5226 mm (205.75 in.) |
| Width | 1871 mm (73.66 in.) |
| Width including mirrors | 2120 mm (83.46 in.) |
| Height | 1479 mm (58.23 in.) |
| Wheelbase | 3165 mm (124.61 in.) |
| Front track | 1600 mm (62.99 in.) |
| Rear (Back) track | 1606 mm (63.23 in.) |
| Front overhang | 888 mm (34.96 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 brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 235/55 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The S 350 4MATIC utilized the M272.965 3.5-liter naturally aspirated V6 engine. This engine, a cornerstone of Mercedes-Benz’s mid-2000s lineup, featured a 60-degree V-angle and all-aluminum construction. It employed a multi-port fuel injection system and a variable valve timing system on both intake and exhaust camshafts, contributing to its relatively smooth power delivery and reasonable fuel efficiency for its class. The engine produced 272 horsepower at 6,000 rpm and 350 Nm (258 lb-ft) of torque between 2,400 and 5,000 rpm. The “G-TRONIC” transmission refers to Mercedes-Benz’s 7G-TRONIC seven-speed automatic gearbox. This transmission was known for its smooth shifts and wide gear ratio spread, enhancing both comfort and fuel economy. The 4MATIC system is Mercedes-Benz’s all-wheel-drive system, providing enhanced traction and stability, particularly in inclement weather conditions.
Driving Characteristics
The S 350 4MATIC offered a comfortable and refined driving experience, prioritizing smoothness and quietness over outright performance. While the 0-60 mph time of around 6.9 seconds was respectable, it wasn’t intended to be a sports sedan. The 7G-TRONIC transmission played a crucial role in masking the engine’s limitations, providing quick and seamless gear changes. Compared to the S 550 with its larger V8, the S 350 felt less powerful, especially during overtaking maneuvers. However, the readily available torque from the V6 made it feel responsive in everyday driving situations. The 4MATIC system provided a secure and planted feel, particularly on slippery surfaces, offering a noticeable advantage over rear-wheel-drive S-Class models.
Equipment & Trim Levels
The S 350 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. Standard safety features included a full suite of airbags, ABS, traction control, and stability control. Optional extras included a panoramic sunroof, rear seat entertainment system, massaging seats, and advanced driver-assistance systems like Distronic Plus (adaptive cruise control) and Lane Keeping Assist. The interior design was characterized by Mercedes-Benz’s signature understated elegance, with a focus on high-quality materials and meticulous craftsmanship.
Chassis & Braking
The V221 S-Class featured an air suspension system as standard, providing a remarkably smooth and comfortable ride. The suspension automatically adjusted to road conditions and driving style, minimizing body roll and maximizing passenger comfort. The S 350 4MATIC was equipped with disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and Electronic Stability Program (ESP) were standard features, enhancing safety and control. The long wheelbase contributed to the car’s stability, while the 4MATIC system further enhanced traction and handling.
Market Reception & Comparison
The S 350 4MATIC was generally well-received by automotive critics, who praised its comfortable ride, luxurious interior, and refined driving experience. However, some reviewers noted that its performance was not as exhilarating as that of the higher-powered S-Class models. Compared to the S 550, the S 350 offered a more affordable entry point into the S-Class range, while still providing a high level of luxury and technology. Fuel economy was a strong point for the S 350, being noticeably better than the V8-powered models. Reliability was generally good, although the complex electronic systems of the V221 S-Class could occasionally require attention.
Legacy
The M272 engine, while generally reliable, is known to be susceptible to timing chain wear, particularly if oil changes are neglected. The 7G-TRONIC transmission is also known for its durability, but valve body issues can occur with higher mileage. Today, the S 350 4MATIC (V221) represents a relatively affordable way to experience the luxury and technology of a flagship Mercedes-Benz sedan. Well-maintained examples are still sought after by enthusiasts who appreciate the car’s comfortable ride, refined driving experience, and understated elegance. The car’s long wheelbase and all-wheel-drive system continue to make it a practical and appealing choice for those seeking a luxurious and capable grand tourer.
