The Mercedes-Benz G-class 6×6 (W463) AMG G 63 V8, produced from 2013 to 2015, represents a unique and highly specialized iteration of the iconic G-Wagen. Built as a limited-production model, primarily for the Middle Eastern market, the 6×6 combined the rugged off-road capability of the G-class with the high-performance of the AMG G 63. It distinguished itself from standard G-Wagens with its six-wheel drive configuration, extended wheelbase, and a pickup truck body style. This vehicle was never officially sold in the United States, adding to its exclusivity.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | G-class |
| Generation | G-class 6×6 (W463) |
| Type | AMG G 63 V8 (544 Hp) 6×6 7G-TRONIC SPEEDSHIFT PLUS |
| Start of production | 2013 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Off-road vehicle, Pick-up |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption (combined) | 11.2-19.6 l/100 km (21 – 12 US mpg, 25.2 – 14.4 UK mpg, 8.9 – 5.1 km/l) |
| CO2 emissions | 295-459 g/km |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 160 km/h (99.42 mph) |
| Weight-to-power ratio | 6.9 kg/Hp, 144.1 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 201.3 Nm/tonne |
| Power | 544 Hp |
| Power per litre | 99.6 Hp/l |
| Torque | 760 Nm (560.55 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 157 |
| 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 | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 3775 kg (8322.45 lbs.) |
| Fuel tank capacity | 159 l (42 US gal | 34.98 UK gal) |
| Length | 5875 mm (231.3 in.) |
| Width | 2110 mm (83.07 in.) |
| Height | 2210 mm (87.01 in.) |
| Wheelbase | 4220 mm (166.14 in.) |
| Ride height (ground clearance) | 460 mm (18.11 in.) |
| Approach angle | 52° |
| Departure angle | 54° |
| Ramp-over angle | 22° |
| Climb angle | 45° |
| Wading depth | 1000 mm (39.37 in.) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC SPEEDSHIFT PLUS |
| Front suspension | Coil spring, Rigid axle suspension |
| Rear suspension | Rigid axle suspension, Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system), Hydraulic Steering |
| Tire size | R37 |
| Wheel rim size | 37 |
Powertrain & Engine Architecture
The heart of the G 63 6×6 is the M157 5.5-liter V8 engine. This engine, a staple of AMG performance models, utilizes direct fuel injection and twin turbochargers to produce 544 horsepower and 760 Nm (560.55 lb.-ft.) of torque. The engine’s architecture features a DOHC (Dual Overhead Camshaft) valvetrain and an intercooler to manage intake temperatures. The 7G-TRONIC SPEEDSHIFT PLUS automatic transmission, a seven-speed unit, was specifically tuned to handle the increased power and weight of the 6×6. This transmission offered relatively quick shifts and a wide gear ratio spread, crucial for both on-road performance and off-road crawling. The six-wheel drive system itself is a complex arrangement, with a selectable all-wheel-drive mode and three locking differentials (front, center, and rear) for maximum traction in challenging terrain.
Driving Characteristics
The G 63 6×6’s driving experience is unique. Despite its considerable weight (3775 kg or 8322.45 lbs), the powerful V8 engine provides strong acceleration. The 7G-TRONIC transmission, while smooth, isn’t geared for outright speed, prioritizing torque delivery for off-road situations. The extended wheelbase and six wheels contribute to a surprisingly stable ride, even on uneven surfaces. However, the vehicle’s size and weight make it less agile than standard G-Wagens. The six-wheel configuration and locking differentials allow for exceptional off-road capability, enabling it to traverse extremely difficult terrain. The steering, while hydraulically assisted, feels somewhat heavy due to the vehicle’s size and weight.
Equipment & Trim Levels
The G 63 6×6 was largely a luxury-oriented vehicle, even in its off-road focused design. Standard equipment included leather upholstery, heated front seats, a premium sound system, and a comprehensive suite of off-road aids. The interior featured AMG-specific styling cues, including a flat-bottom steering wheel and unique instrument cluster graphics. Optional extras included a rear bench seat (increasing seating capacity to five), various exterior styling packages, and upgraded audio systems. The pickup bed was typically equipped with a roll bar and offered ample cargo space.
Chassis & Braking
The chassis of the G 63 6×6 is a reinforced version of the standard G-Wagen ladder frame, designed to withstand the stresses of the six-wheel drive system and increased weight. The suspension utilizes coil springs and rigid axles front and rear, providing substantial wheel articulation for off-road use. Braking duties are handled by ventilated disc brakes on all six wheels, paired with an ABS (Anti-lock Braking System) for enhanced stopping power and control. The vehicle’s large tires (R37 size) contribute to both its off-road capability and its imposing appearance.
Market Reception & Comparison
The G 63 6×6 was not widely reviewed by automotive publications due to its limited production and regional availability. However, those that did test the vehicle praised its exceptional off-road capability and unique character. Critics noted the vehicle’s high price tag and considerable fuel consumption (11.2-19.6 l/100 km). Compared to the standard G 63, the 6×6 offered significantly enhanced off-road performance but at the expense of on-road agility. Compared to other high-performance off-road vehicles, such as the Land Rover Defender, the G 63 6×6 stood out for its luxurious appointments and powerful V8 engine.
Legacy
The Mercedes-Benz G 63 6×6 remains a highly sought-after vehicle among collectors and enthusiasts. Its limited production run and unique design have contributed to its increasing value in the used car market. The powertrain, while thirsty, has proven to be relatively reliable with proper maintenance. The 6×6’s legacy lies in its demonstration of Mercedes-Benz’s engineering prowess and its willingness to create truly unique and extravagant vehicles. It represents a bold statement of capability and luxury, cementing its place as a modern automotive icon.
