The Mercedes-Benz R-Class Long (V251 series, post-facelift introduced in 2010) R 350 V6 4MATIC G-TRONIC represents a unique offering within the luxury SUV/wagon segment. Produced from 2010 to 2012, this variant aimed to bridge the gap between traditional SUVs and station wagons, offering seating for up to seven passengers in a relatively long wheelbase configuration. The R-Class, while not a commercial blockbuster for Mercedes-Benz, showcased innovative engineering and a focus on practicality combined with luxury. The R 350 4MATIC, with its 272 horsepower V6 engine and all-wheel-drive system, was positioned as a mid-range offering within the R-Class lineup, appealing to buyers seeking a balance of performance, space, and all-weather capability.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | R-Class |
| Generation | R-Class Long (V251, facelift 2010) |
| Type (Engine) | R 350 V6 (272 Hp) 4MATIC G-TRONIC |
| Start of production | 2010 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5-7 |
| Doors | 5 |
| Fuel consumption (urban) | 15.9-16.1 l/100 km (14.8 – 14.6 US mpg, 17.8 – 17.5 UK mpg, 6.3 – 6.2 km/l) |
| Fuel consumption (extra urban) | 9.3-9.5 l/100 km (25.3 – 24.8 US mpg, 30.4 – 29.7 UK mpg, 10.8 – 10.5 km/l) |
| Fuel consumption (combined) | 11.7-11.9 l/100 km (20.1 – 19.8 US mpg, 24.1 – 23.7 UK mpg, 8.5 – 8.4 km/l) |
| CO2 emissions | 274-279 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.4 sec |
| Acceleration 0 – 62 mph | 8.4 sec |
| Acceleration 0 – 60 mph | 8 sec (Calculated) |
| Maximum speed | 230 km/h (142.92 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.9 kg/Hp, 126.2 Hp/tonne |
| Weight-to-torque ratio | 6.2 kg/Nm, 162.4 Nm/tonne |
| Power | 272 Hp @ 6000 rpm |
| Torque | 350 Nm @ 2400-5000 rpm (258.15 lb.-ft. @ 2400-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 272.967 |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Engine configuration | V-engine |
| Compression ratio | 10.7:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant capacity | 10.1 l (10.67 US qt | 8.89 UK qt) |
| Kerb Weight | 2155 kg (4750.96 lbs.) |
| Max. weight | 2880 kg (6349.31 lbs.) |
| Max load | 725 kg (1598.35 lbs.) |
| Trunk (boot) space – minimum | 633 l (22.35 cu. ft.) |
| Trunk (boot) space – maximum | 2385 l (84.23 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 (braked) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load (unbraked) | 750 kg (1653.47 lbs.) |
| Length | 5157 mm (203.03 in.) |
| Width | 1922 mm (75.67 in.) |
| Width (with mirrors) | 2183 mm (85.94 in.) |
| Height | 1674 mm (65.91 in.) |
| Wheelbase | 3215 mm (126.57 in.) |
| Front track | 1661 mm (65.39 in.) |
| Rear track | 1651 mm (65 in.) |
| Front overhang | 922 mm (36.3 in.) |
| Rear overhang | 1020 mm (40.16 in.) |
| Turning circle | 12.6 m (41.34 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link with stabilizer |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS |
| Tire size | 255/55 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The R 350 4MATIC is powered by the M272.967 3.5-liter naturally aspirated V6 engine. This engine, a staple in many Mercedes-Benz vehicles of the era, features a 60-degree V-angle and utilizes a three-valve-per-cylinder (two intake, one exhaust) design. Fuel delivery is handled by a multi-port fuel injection system, and the engine benefits from variable valve timing on both the intake and exhaust sides. The engine produces 272 horsepower at 6000 rpm and 350 Nm (258 lb-ft) of torque between 2400 and 5000 rpm. The engine is longitudinally mounted in the front of the vehicle. The 7G-TRONIC automatic transmission, a seven-speed unit, is paired with the engine. This transmission is known for its smooth shifting and efficiency, contributing to a relatively refined driving experience. The 4MATIC all-wheel-drive system employs a multi-plate clutch to distribute torque between the front and rear axles, providing enhanced traction in various conditions.
Driving Characteristics
The R 350 4MATIC offers a comfortable and composed ride. While not overtly sporty, the engine provides adequate power for everyday driving and highway cruising. Acceleration from 0 to 60 mph takes approximately 8 seconds. The 7G-TRONIC transmission contributes to smooth gear changes, although it can sometimes feel hesitant during quick downshifts. Compared to the R 550 with its larger V8 engine, the R 350 offers less outright performance but delivers better fuel economy. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as the available manual transmission in some other R-Class variants. The all-wheel-drive system provides confident handling in inclement weather, making it a practical choice for regions with snow or rain.
Equipment & Trim Levels
The R 350 4MATIC typically came standard with features such as leather upholstery, power-adjustable front seats, dual-zone automatic climate control, a premium audio system, and a power liftgate. Optional extras included a rear-seat entertainment system, panoramic sunroof, and advanced driver-assistance features like Distronic adaptive cruise control and lane-keeping assist. Interior trim options varied, with choices in wood veneers and aluminum accents. The long wheelbase version provided ample space for passengers in the second and third rows, making it a viable option for families.
Chassis & Braking
The R-Class utilizes a double wishbone suspension at the front and an independent multi-link suspension at the rear, providing a comfortable ride and good handling characteristics. Stabilizer bars are fitted to both axles to reduce body roll. The R 350 4MATIC is equipped with disc brakes on all four wheels, providing adequate stopping power. Anti-lock braking system (ABS) is standard. The suspension is tuned for comfort rather than outright sportiness, prioritizing a smooth ride over aggressive handling.
Market Reception & Comparison
The R-Class, in general, received mixed reviews. Critics praised its spacious interior, comfortable ride, and innovative design, but questioned its styling and positioning in the market. The R 350 4MATIC was often seen as the most sensible choice in the lineup, offering a good balance of performance, fuel economy, and practicality. Compared to the R 550, it was more affordable and fuel-efficient, while still providing a luxurious experience. However, it lacked the performance appeal of the higher-end model. Fuel economy figures of around 20 mpg combined were respectable for a vehicle of its size and weight.
Legacy
The Mercedes-Benz R-Class, while not a sales success, remains a unique and interesting vehicle. The R 350 4MATIC powertrain, while not prone to major issues, requires regular maintenance to ensure longevity. Common maintenance items include oil changes, transmission fluid flushes, and spark plug replacements. The M272 engine is generally considered reliable, but can be susceptible to timing chain wear if maintenance is neglected. On the used car market, the R 350 4MATIC can be found at relatively affordable prices, making it an attractive option for buyers seeking a spacious and luxurious vehicle with all-wheel-drive capability. Its distinctive styling and innovative features continue to appeal to a niche audience.
