2010-2012 Mercedes-Benz G-class Cabriolet (W463 facelift ) G 500 V8 (388 Hp) 4MATIC 7G-TRONIC

The Mercedes-Benz G-Class Cabriolet G 500 V8 (388 hp) 4MATIC, produced between 2010 and 2012, represents a unique blend of luxury, off-road capability, and open-air motoring within the iconic G-Wagen lineage. This variant, part of the W463 facelift generation, offered a powerful V8 engine paired with a seven-speed automatic transmission and a permanent all-wheel-drive system. It occupied the premium position within the Cabriolet range, offering the highest performance and most luxurious appointments available at the time. The G-Class, originally designed as a military vehicle, had successfully transitioned into a desirable luxury SUV, and the Cabriolet version further enhanced its exclusivity.

Technical Specifications

Brand Mercedes-Benz
Model G-Class
Generation G-Class Cabriolet (W463, facelift 2008)
Type (Engine) G 500 V8 (388 Hp) 4MATIC 7G-TRONIC
Start of production 2010
End of production 2012
Powertrain Architecture Internal Combustion engine
Body type Off-road vehicle, Cabriolet
Seats 4
Doors 2
Fuel consumption (urban) 20 l/100 km (11.8 US mpg, 14.1 UK mpg, 5 km/l)
Fuel consumption (extra urban) 11.9 l/100 km (19.8 US mpg, 23.7 UK mpg, 8.4 km/l)
Fuel consumption (combined) 14.9 l/100 km (15.8 US mpg, 19 UK mpg, 6.7 km/l)
CO2 emissions 348 g/km
Fuel Type Petrol (Gasoline)
Acceleration 0-100 km/h 5.9 sec
Acceleration 0-60 mph 5.6 sec
Maximum speed 210 km/h (130.49 mph)
Emission standard Euro 5
Weight-to-power ratio 5.6 kg/Hp
Weight-to-torque ratio 4.1 kg/Nm
Power 388 Hp @ 6000 rpm
Torque 530 Nm @ 2800-4800 rpm (390.91 lb.-ft. @ 2800-4800 rpm)
Engine layout Front, Longitudinal
Engine Model/Code M 273.963
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.)
Number of valves per cylinder 4
Fuel injection system Multi-port manifold injection
Engine aspiration Naturally aspirated engine
Valvetrain DOHC
Engine oil capacity 9 l (9.51 US qt | 7.92 UK qt)
Kerb Weight 2155 kg (4750.96 lbs.)
Max. weight 2850 kg (6283.17 lbs.)
Max load 695 kg (1532.21 lbs.)
Trunk (boot) space (min) 238 l (8.4 cu. ft.)
Trunk (boot) space (max) 1580 l (55.8 cu. ft.)
Fuel tank capacity 96 l (25.36 US gal | 21.12 UK gal)
Permitted trailer load (braked) 2850 kg (6283.17 lbs.)
Permitted trailer load (unbraked) 750 kg (1653.47 lbs.)
Length 4257 mm (167.6 in.)
Width 1760 mm (69.29 in.)
Width (including mirrors) 2007 mm (79.02 in.)
Height 1941 mm (76.42 in.)
Wheelbase 2400 mm (94.49 in.)
Front track 1475 mm (58.07 in.)
Rear track 1475 mm (58.07 in.)
Ride height (ground clearance) 205 mm (8.07 in.)
Minimum turning circle 11.3 m (37.07 ft.)
Approach angle 36°
Departure angle 27°
Climb angle 38.7°
Wading depth 500 mm (19.69 in.)
Drivetrain All wheel drive (4×4)
Gearbox 7 gears, automatic transmission G-TRONIC
Front suspension Coil spring, Rigid axle suspension
Rear suspension Rigid axle suspension, Coil spring
Front brakes Ventilated discs
Rear brakes Ventilated discs
Steering type Cone worm with recirculation balls
Power steering Hydraulic Steering
Tires size 265/60 R18
Wheel rims size 7.5J x 18

INTRODUCTION

The 2010-2012 Mercedes-Benz G 500 Cabriolet, built on the W463 platform, represented the pinnacle of open-top G-Class luxury. The W463, introduced in 1990, was a significant evolution of the original G-Wagen, incorporating more comfort and refinement while retaining its legendary off-road prowess. The facelifted version, launched in 2008, brought updated styling, improved interior materials, and more powerful engine options. The G 500 Cabriolet, with its 5.5-liter V8 engine and 7G-TRONIC automatic transmission, was positioned as the top-tier offering for those seeking a unique and capable luxury vehicle. It was primarily sold in Europe and select international markets, with limited availability in the United States.

Powertrain & Engine Architecture

The heart of the G 500 Cabriolet is the M 273.963 5.5-liter naturally aspirated V8 engine. This engine, a mainstay of Mercedes-Benz’s performance lineup during the period, features a three-valve-per-cylinder design (two intake, one exhaust) and utilizes multi-port fuel injection. The engine produces 388 horsepower at 6000 rpm and 530 Nm (390.91 lb-ft) of torque between 2800 and 4800 rpm. The 7G-TRONIC seven-speed automatic transmission, known for its smooth shifting and efficiency, was standard. This transmission offered a blend of comfort and performance, with gear ratios optimized for both on-road cruising and off-road crawling. The engine’s longitudinal mounting and the permanent all-wheel-drive system contribute to the vehicle’s balanced handling and exceptional traction.

Driving Characteristics

The G 500 Cabriolet, despite its considerable weight (2155 kg / 4750.96 lbs), delivers surprisingly brisk performance. The 0-60 mph sprint takes approximately 5.6 seconds, and the top speed is electronically limited to 130.49 mph (210 km/h). The 7G-TRONIC transmission provides seamless gear changes, and the V8 engine offers ample torque throughout the rev range. Compared to the smaller displacement engines offered in the G-Class lineup, the G 500 provides a more effortless driving experience, particularly when fully loaded or tackling challenging terrain. While not as fuel-efficient as the smaller engines (14.9 l/100 km combined), the G 500’s performance and refinement justify the increased fuel consumption for many buyers. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as a manual gearbox.

Equipment & Trim Levels

The G 500 Cabriolet came standard with a high level of equipment, befitting its premium positioning. Standard features included leather upholstery, heated front seats, automatic climate control, a premium audio system, and parking sensors. The Cabriolet top was a manually operated soft top, offering a classic open-air experience. Optional extras included upgraded leather packages, wood trim, navigation system, and various off-road enhancements. The interior design was relatively conservative, reflecting the G-Class’s utilitarian origins, but with a focus on durability and functionality.

Chassis & Braking

The G-Class chassis is a robust ladder-frame construction, providing exceptional strength and rigidity. The suspension consists of coil springs and rigid axles front and rear, offering excellent articulation for off-road driving. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The G 500 Cabriolet benefits from a heavy-duty suspension setup to cope with the added weight of the V8 engine and the demands of off-road use. Anti-lock braking system (ABS) is standard, enhancing safety and control in various driving conditions.

Market Reception & Comparison

The G 500 Cabriolet was generally well-received by automotive critics, who praised its unique combination of luxury, performance, and off-road capability. However, its high price tag and relatively poor fuel economy were often cited as drawbacks. Compared to other luxury SUVs of the time, the G 500 offered a more rugged and distinctive character. Against other G-Class variants, such as the G 350 or G 460, the G 500 provided a significant performance advantage, but at a higher cost. The G 500’s reliability was generally good, although maintenance costs could be substantial due to the complexity of the V8 engine and the vehicle’s specialized components.

Legacy

The 2010-2012 Mercedes-Benz G 500 Cabriolet remains a highly sought-after vehicle in the used car market. Its rarity, combined with its iconic status and robust build quality, has ensured strong resale values. The M 273 V8 engine, while known for its complexity, is generally considered reliable when properly maintained. The G 500 Cabriolet represents a unique chapter in the G-Class’s history, offering a blend of luxury, performance, and off-road capability that is difficult to replicate. It continues to appeal to collectors and enthusiasts who appreciate its distinctive character and enduring appeal.

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