The Mercedes-Benz G-Class Cabriolet G 350 CDI, produced from 2009 to 2010, represents a unique iteration of the iconic G-Wagen. Falling within the W463 facelift generation, this variant combined the rugged off-road capability synonymous with the G-Class with the open-air experience of a convertible. Powered by a 3.0-liter turbocharged diesel V6 engine paired with a 7G-TRONIC automatic transmission, the G 350 CDI Cabriolet offered a blend of performance, luxury, and distinctive styling. It occupied a mid-range position within the G-Class lineup, offering a more accessible entry point than the higher-performance G 55 AMG while still delivering the core G-Class experience.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | G-Class |
| Generation | G-Class Cabriolet (W463, facelift 2008) |
| Type (Engine) | G 350 CDI V6 (224 Hp) 4MATIC 7G-TRONIC |
| Start of production | 2009 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Off-road vehicle, Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 13.4 l/100 km (17.6 US mpg, 21.1 UK mpg) |
| Fuel consumption (extra urban) | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg) |
| Fuel consumption (combined) | 11 l/100 km (21.4 US mpg, 25.7 UK mpg) |
| CO2 emissions | 291 g/km |
| Fuel Type | Diesel |
| Acceleration 0-100 km/h | 8.8 sec |
| Acceleration 0-60 mph | 8.4 sec |
| Maximum speed | 177 km/h (109.98 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 9.8 kg/Hp |
| Weight-to-torque ratio | 4 kg/Nm |
| Power | 224 Hp @ 3800 rpm |
| Torque | 540 Nm @ 1600-2400 rpm (398.28 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 642.970 |
| Engine displacement | 2987 cm3 (182.28 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt, 7.04 UK qt) |
| Kerb Weight | 2185 kg (4817.1 lbs.) |
| Max. weight | 2850 kg (6283.17 lbs.) |
| Max load | 665 kg (1466.07 lbs.) |
| Trunk space (min) | 238 l (8.4 cu. ft.) |
| Trunk space (max) | 1580 l (55.8 cu. ft.) |
| Fuel tank capacity | 96 l (25.36 US gal, 21.12 UK gal) |
| Length | 4257 mm (167.6 in.) |
| Width | 1760 mm (69.29 in.) |
| Height | 1941 mm (76.42 in.) |
| Wheelbase | 2400 mm (94.49 in.) |
| Tires size | 265/70 R16 |
| Gearbox | 7 gears, automatic transmission G-TRONIC |
Powertrain & Engine Architecture
The heart of the G 350 CDI Cabriolet is the OM 642.970 3.0-liter V6 diesel engine. This engine, a mainstay in many Mercedes-Benz vehicles of the era, utilizes a common rail direct injection system to deliver fuel directly into the cylinders at extremely high pressure. This technology, combined with a variable geometry turbocharger and intercooler, optimizes combustion efficiency and power output. The engine produces 224 horsepower at 3800 rpm and a substantial 540 Nm (398 lb-ft) of torque between 1600 and 2400 rpm. The 7G-TRONIC automatic transmission, a seven-speed unit, was specifically chosen for its smooth shifting and ability to handle the engine’s torque. This transmission features a torque converter lock-up clutch to improve fuel efficiency at cruising speeds. The engine also incorporates a diesel particulate filter (DPF) to reduce emissions, meeting Euro 4 standards.
Driving Characteristics
The G 350 CDI Cabriolet offered a unique driving experience. While not as overtly powerful as the gasoline-powered G-Class models, the diesel V6 provided ample torque for both on-road and off-road driving. The 7G-TRONIC transmission contributed to a relaxed cruising experience, with well-spaced gear ratios. Acceleration from 0 to 60 mph took approximately 8.4 seconds, and the vehicle had a top speed of 177 km/h (109.98 mph). Compared to the manual transmission versions, the automatic offered greater convenience, particularly in urban environments. However, some enthusiasts preferred the more direct control of the manual gearbox. The G 350 CDI’s weight and high center of gravity were noticeable in cornering, but the robust suspension and 4MATIC all-wheel-drive system provided stability and confidence.
Equipment & Trim Levels
The G 350 CDI Cabriolet came standard with a comprehensive list of features, reflecting its luxury positioning. Standard equipment included leather upholstery, automatic climate control, power windows and locks, and a high-end audio system. The convertible top was manually operated, adding a touch of traditionalism to the vehicle. Optional extras included heated seats, navigation system, parking sensors, and upgraded interior trim materials. The interior design was functional and durable, with a focus on practicality rather than outright extravagance. The dashboard layout was typical of Mercedes-Benz vehicles of the period, with a clear and intuitive arrangement of controls.
Chassis & Braking
The G-Class chassis is a body-on-frame construction, renowned for its strength and durability. The G 350 CDI Cabriolet featured a rigid axle suspension with coil springs at both the front and rear, providing excellent off-road articulation. The braking system consisted of ventilated discs on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) was standard. The steering system was a recirculating ball type with hydraulic power assistance, offering a direct and responsive feel. The vehicle’s high ground clearance (205 mm / 8.07 in.) and approach/departure angles (36°/27°) made it capable of tackling challenging terrain.
Market Reception & Comparison
The G 350 CDI Cabriolet was generally well-received by automotive critics. It was praised for its unique combination of luxury, off-road capability, and fuel efficiency. The diesel engine was noted for its strong torque and relatively low fuel consumption compared to the gasoline alternatives. However, some critics found the ride quality to be somewhat firm, and the vehicle’s size and weight made it less agile than other SUVs. Compared to the G 55 AMG, the G 350 CDI offered a more affordable entry point into the G-Class world, but with a significant reduction in performance. Compared to other diesel-powered SUVs of the time, the G 350 CDI stood out for its distinctive styling and uncompromising off-road credentials.
Legacy
The OM 642 engine, found in the G 350 CDI, is known for its durability and reliability when properly maintained. While diesel particulate filters can require periodic maintenance or replacement, the engine itself is generally robust. Today, the G 350 CDI Cabriolet is a sought-after vehicle among collectors and enthusiasts. Its rarity, combined with the enduring appeal of the G-Class, has resulted in steadily increasing values in the used car market. These vehicles are often well-maintained and appreciated for their unique character and capability. The G 350 CDI represents a compelling blend of classic G-Class design and modern diesel technology, making it a desirable and increasingly collectible vehicle.
