The Mercedes-Benz G 55 AMG Long, produced from 2008 to 2010, represents a high-performance iteration of the iconic G-Class (W463) series, specifically the facelifted model. Positioned as the top-tier performance variant of the long-wheelbase G-Class, it combined the rugged off-road capability synonymous with the G-Wagen with the potent power of AMG’s supercharged V8 engine. This model year saw significant updates to the W463 platform, including interior refinements and enhanced technology, while retaining the G-Class’s distinctive boxy design. The G 55 Long catered to buyers seeking a luxurious and exceptionally capable SUV with substantial performance.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | G-class |
| Generation | G-class Long (W463, facelift 2008) |
| Type (Engine) | AMG G 55 V8 Kompressor (507 Hp) 4MATIC 7G-TRONIC |
| Start of production | 2008 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Off-road vehicle |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 21.4 l/100 km (11 US mpg, 13.2 UK mpg, 4.7 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 12.7 l/100 km (18.5 US mpg, 22.2 UK mpg, 7.9 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 15.9 l/100 km (14.8 US mpg, 17.8 UK mpg, 6.3 km/l) |
| CO2 emissions (NEDC) | 378 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 210 km/h (130.49 mph) – Electronically limited |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 4.9 kg/Hp, 204.8 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 282.8 Nm/tonne |
| Power | 507 Hp @ 6100 rpm |
| Power per litre | 93.2 Hp/l |
| Torque | 700 Nm @ 2750-4000 rpm (516.29 lb.-ft. @ 2750-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 113.993 |
| Engine displacement | 5439 cm3 (331.91 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 97 mm (3.82 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Number of valves per cylinder | 3 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Supercharger, Intercooler |
| Valvetrain | SOHC |
| Engine oil capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 2475 kg (5456.44 lbs.) |
| Max. weight | 3200 kg (7054.79 lbs.) |
| Max load | 725 kg (1598.35 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 2250 l (79.46 cu. ft.) |
| Fuel tank capacity | 96 l (25.36 US gal | 21.12 UK gal) |
| Max. roof load | 200 kg (440.92 lbs.) |
| Permitted trailer load with brakes (12%) | 3500 kg (7716.18 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 4662 mm (183.54 in.) |
| Width | 1760 mm (69.29 in.) |
| Width including mirrors | 2007 mm (79.02 in.) |
| Height | 1931 mm (76.02 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1475 mm (58.07 in.) |
| Rear (Back) track | 1475 mm (58.07 in.) |
| Front overhang | 783 mm (30.83 in.) |
| Rear overhang | 820 mm (32.28 in.) |
| Ride height (ground clearance) | 205 mm (8.07 in.) |
| Minimum turning circle (turning diameter) | 13.3 m (43.64 ft.) |
| Approach angle | 36° |
| Departure angle | 27° |
| Climb angle | 38.7° |
| Wading depth | 500 mm (19.69 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of 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 |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 275/55 R19 |
| Wheel rims size | 9.5J x 19 |
INTRODUCTION
The Mercedes-Benz G 55 AMG Long, built between 2008 and 2010, is a luxury, high-performance SUV based on the W463 G-Class platform. The “Long” designation indicates an extended wheelbase, providing increased rear passenger space. This variant was positioned above the standard G 55 AMG in terms of luxury and interior volume, appealing to customers who desired both the G-Class’s legendary off-road prowess and a more spacious, comfortable cabin. It represented a significant offering in the ultra-luxury SUV segment, competing with vehicles like the Range Rover and Porsche Cayenne.
Powertrain & Engine Architecture
At the heart of the G 55 AMG Long lies the M113.993 5.4-liter V8 engine. This engine is supercharged via a Roots-type blower, producing 507 horsepower at 6100 rpm and 700 Nm (516 lb-ft) of torque between 2750 and 4000 rpm. The engine utilizes a three-valve-per-cylinder design (two intake, one exhaust) and multi-port fuel injection. The supercharger, coupled with intercooling, provides instant throttle response and a broad torque curve. The engine is longitudinally mounted in the front of the vehicle. Power is transmitted to all four wheels through a 7G-TRONIC seven-speed automatic transmission. This transmission features Touchshift functionality, allowing for manual gear selection. The 7G-TRONIC was chosen for its smooth shifting and ability to handle the engine’s substantial torque output.
Driving Characteristics
The G 55 AMG Long delivers a unique driving experience. Despite its size and weight (2475 kg or 5456 lbs), the supercharged V8 provides brisk acceleration – 0 to 60 mph in approximately 5.2 seconds. The 7G-TRONIC transmission contributes to this performance, offering quick and precise shifts. However, the G-Class’s inherent characteristics – high center of gravity and solid axles – result in noticeable body roll during cornering. The steering, while hydraulically assisted, lacks the precision of more modern systems. Off-road, the G 55 AMG Long truly shines. Its permanent all-wheel-drive system, three locking differentials, and substantial ground clearance (205 mm or 8.07 inches) allow it to tackle extremely challenging terrain. The long wheelbase does slightly reduce maneuverability in tight off-road situations compared to the standard G-Class.
Equipment & Trim Levels
The G 55 AMG Long came standard with a comprehensive list of luxury features. Interior appointments included premium leather upholstery, wood trim, and heated front and rear seats. Standard equipment also included automatic climate control, a premium audio system, and power-adjustable seats. The extended wheelbase provided significantly more rear legroom than the standard G 55 AMG. Optional extras included a sunroof, upgraded audio systems, and various customization options through Mercedes-Benz’s Designo program, allowing buyers to personalize the interior with unique materials and colors.
Chassis & Braking
The G 55 AMG Long retains the traditional G-Class chassis design, featuring a ladder-frame construction. This provides exceptional strength and durability, crucial for off-road use. The suspension consists of coil springs and rigid axles front and rear. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The anti-lock braking system (ABS) is standard. Due to the vehicle’s weight, brake fade can occur under extreme braking conditions, particularly during prolonged off-road use.
Market Reception & Comparison
The G 55 AMG Long was generally well-received by automotive critics, who praised its combination of luxury, performance, and off-road capability. However, its high price tag and somewhat archaic driving dynamics were noted. Compared to the standard G 55 AMG, the Long offered a more spacious and comfortable rear seat, making it a more appealing option for buyers who frequently carried passengers. Compared to competitors like the Range Rover, the G 55 AMG Long offered a more rugged and utilitarian aesthetic, along with superior off-road performance. Fuel economy was, unsurprisingly, poor – averaging around 15.9 l/100 km (14.8 US mpg).
Legacy
The G 55 AMG Long remains a sought-after vehicle in the used car market, particularly among collectors and enthusiasts. Its limited production numbers and unique combination of features contribute to its desirability. The M113 engine, while known for its power, requires regular maintenance to ensure reliability. Common issues include supercharger bearing wear and potential oil leaks. Despite these potential issues, the G 55 AMG Long is generally considered a robust and durable vehicle, capable of providing many years of service with proper care. It represents a unique chapter in the G-Class’s history, bridging the gap between its utilitarian origins and its modern luxury status.
