The Mercedes-Benz G-Class Long (W463, facelift 2015) AMG G 63 V8 (563 Hp) 4MATIC, equipped with the 7G-TRONIC AMG SPEEDSHIFT PLUS automatic transmission, represents the pinnacle of performance and luxury within the iconic G-Wagen lineage. Produced from 2015 to 2017, this variant catered specifically to the North American market, offering a unique blend of off-road capability and high-speed performance. It sits at the top of the G-Class range, distinguished by its powerful engine, enhanced styling, and premium features. The “Long” designation refers to the extended wheelbase, providing increased rear passenger space compared to the standard G-Class.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | G-class |
| Generation | G-class Long (W463, facelift 2015) |
| Type | AMG G 63 V8 (563 Hp) 4MATIC 7G-TRONIC AMG SPEEDSHIFT PLUS (USA) |
| Start of production | 2015 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Off-road vehicle |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 19.6 l/100 km (12 US mpg, 14.4 UK mpg, 5.1 km/l) |
| Fuel consumption (extra urban) | 16.8 l/100 km (14 US mpg, 16.8 UK mpg, 6 km/l) |
| Fuel consumption (combined) | 18.1 l/100 km (13 US mpg, 15.6 UK mpg, 5.5 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 5.3 sec |
| Maximum speed | 210 km/h (130.49 mph) – Electronically limited |
| Weight-to-power ratio | 4.7 kg/Hp, 211 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 284.9 Nm/tonne |
| Power | 563 Hp @ 5500 rpm |
| Power per litre | 103.1 Hp/l |
| Torque | 760 Nm @ 1725-5250 rpm (560.55 lb.-ft. @ 1725-5250 rpm) |
| Maximum engine speed | 7000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 157.984 |
| 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.) |
| Compression ratio | 10:1 |
| 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 | 2668 kg (5881.93 lbs.) |
| Trunk (boot) space – minimum | 1280 l (45.2 cu. ft.) |
| Trunk (boot) space – maximum | 2251 l (79.49 cu. ft.) |
| Fuel tank capacity | 96 l (25.36 US gal | 21.12 UK gal) |
| Permitted trailer load with brakes (12%) | 3175 kg (6999.68 lbs.) |
| Length | 4763 mm (187.52 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1938 mm (76.3 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1501 mm (59.09 in.) |
| Rear (Back) track | 1501 mm (59.09 in.) |
| Ride height (ground clearance) | 196 mm (7.72 in.) |
| Minimum turning circle (turning diameter) | 13.6 m (44.62 ft.) |
| Approach angle | 27° |
| Departure angle | 27° |
| Ramp-over (brakeover) angle | 22° |
| Climb angle | 38.7° |
| Wading depth | 600 mm (23.62 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 AMG SPEEDSHIFT PLUS |
| Front suspension | Coil spring, Rigid axle suspension, Trailing arm |
| Rear suspension | Rigid axle suspension, Trailing arm, Coil spring |
| Front brakes | Ventilated discs, 375×36 mm |
| Rear brakes | Ventilated discs, 330×22 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 275/50 R20 |
| Wheel rims size | 9.5J x 20 |
INTRODUCTION
The AMG G 63, as part of the W463 series (facelifted in 2015), represents a significant evolution of the original G-Class, initially designed as a military vehicle. While retaining its rugged, boxy aesthetic and formidable off-road capabilities, the 2015 facelift brought updated technology, improved refinement, and a more powerful engine. The AMG G 63 specifically targeted buyers seeking a high-performance SUV with a luxurious interior and a distinctive presence. The extended wheelbase “Long” version offered increased space for rear passengers, making it a more comfortable option for families or those frequently transporting passengers. This model was primarily sold in North America and other markets where larger SUVs are preferred.
Powertrain & Engine Architecture
At the heart of the AMG G 63 lies the M 157.984 5.5-liter twin-turbocharged V8 engine. This engine, a hallmark of AMG performance, produces 563 horsepower at 5500 rpm and a substantial 760 Nm (560.55 lb.-ft.) of torque between 1725 and 5250 rpm. The engine utilizes direct fuel injection and a sophisticated bi-turbocharging system with an intercooler to maximize power and efficiency. The engine’s architecture is a 90-degree V8, known for its smooth operation and inherent balance. The 7G-TRONIC AMG SPEEDSHIFT PLUS automatic transmission, a seven-speed unit, is specifically tuned for performance, offering quick and precise gear changes. It features three driving modes – Controlled Efficiency (C), Sport, and Manual – allowing the driver to tailor the transmission’s behavior to their preferences. The transmission is designed to handle the engine’s significant torque output and provide responsive acceleration.
Driving Characteristics
The AMG G 63 delivers a unique driving experience. Despite its considerable weight (2668 kg / 5881.93 lbs.), the powerful engine and well-tuned transmission provide brisk acceleration, achieving 0-60 mph in just 5.3 seconds. The 7G-TRONIC transmission’s gear ratios are optimized for both on-road performance and off-road crawling. While not as nimble as more modern SUVs, the G 63 offers a surprisingly composed ride on paved roads, thanks to its sophisticated suspension system. Off-road, the G 63 truly shines, with its robust four-wheel-drive system, three locking differentials, and ample ground clearance allowing it to tackle challenging terrain with ease. The steering, while hydraulic, can feel somewhat heavy at low speeds but provides a direct and connected feel at higher speeds.
Equipment & Trim Levels
The AMG G 63 came standard with a comprehensive list of features, including leather upholstery, heated and ventilated front seats, a premium sound system, and a navigation system. The interior featured AMG-specific styling cues, such as a flat-bottom steering wheel and unique instrument cluster graphics. Optional extras included a sunroof, upgraded leather options, and various exterior styling enhancements. The “Long” version specifically offered more legroom for rear passengers, enhancing comfort on long journeys. Standard safety features included ABS, stability control, and a suite of airbags.
Chassis & Braking
The G 63 utilizes a robust ladder-frame chassis, a design choice that contributes to its exceptional off-road durability. The suspension consists of coil springs and a rigid axle setup with trailing arms, providing ample wheel articulation for off-road use. The braking system features ventilated discs on all four wheels, with larger rotors and calipers compared to lesser G-Class models. The front brakes measure 375×36 mm, while the rear brakes are 330×22 mm. ABS (Anti-lock braking system) is standard, providing enhanced stopping power and control in various conditions.
Market Reception & Comparison
The AMG G 63 was generally well-received by critics, who praised its powerful engine, luxurious interior, and unique character. However, its high price tag and relatively poor fuel economy (18.1 l/100 km combined) were often cited as drawbacks. Compared to other high-performance SUVs, such as the Porsche Cayenne Turbo or the Range Rover Sport SVR, the G 63 offered a more rugged and utilitarian experience. The standard G 550, with its naturally aspirated V8, provided a more refined and fuel-efficient alternative, while the G 350 diesel offered even greater fuel economy but significantly less power. The G 63 appealed to buyers who prioritized performance and exclusivity over practicality and efficiency.
Legacy
The W463 AMG G 63, particularly the facelifted 2015-2017 models, has become a highly sought-after vehicle in the used car market. Its robust construction and relatively simple mechanicals contribute to its long-term reliability, although maintenance costs can be high due to the specialized nature of the vehicle. The M 157 engine, while powerful, is known to require regular maintenance, including oil changes and spark plug replacements. The G 63’s iconic status and enduring appeal ensure that it will remain a desirable vehicle for enthusiasts and collectors for years to come. It represents a unique chapter in the G-Class’s history, bridging the gap between its utilitarian origins and its modern-day luxury status.
