The Mercedes-Benz G 500 V8 4MATIC, part of the long-wheelbase (W463) G-Class facelift introduced in June 2012 and continuing through August 2015, represents a significant iteration of the iconic off-road vehicle. Positioned as a premium offering within the G-Class range, it combined substantial power from its naturally aspirated V8 engine with the convenience of a seven-speed automatic transmission and the renowned all-wheel-drive capability that defines the G-Wagen. This variant aimed to deliver a blend of luxurious comfort, robust performance, and uncompromising off-road prowess, appealing to buyers seeking a high-end, capable SUV.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | G-class |
| Generation | G-class Long (W463, facelift 2012) |
| Type (Engine) | G 500 V8 (388 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | June, 2012 |
| End of production | August, 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Off-road vehicle |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 20 l/100 km (11.8 US mpg, 14.1 UK mpg, 5 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 11.9 l/100 km (19.8 US mpg, 23.7 UK mpg, 8.4 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 14.9 l/100 km (15.8 US mpg, 19 UK mpg, 6.7 km/l) |
| CO2 emissions (NEDC) | 348 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.3 kg/Hp, 158 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 215.9 Nm/tonne |
| Power | 388 Hp @ 6000 rpm |
| Power per litre | 71 Hp/l |
| Torque | 530 Nm @ 2800-4800 rpm (390.91 lb.-ft. @ 2800-4800 rpm) |
| Maximum engine speed | 6500 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 273.963, M 273.969 |
| 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 | 10.7:1 |
| 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 | 2455 kg (5412.35 lbs.) |
| Max. weight | 3200 kg (7054.79 lbs.) |
| Max load | 745 kg (1642.44 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.) |
| Length | 4662 mm (183.54 in.) |
| Width | 1760 mm (69.29 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1951 mm (76.81 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.) |
| Drag coefficient (Cd) | 0.54 |
| Minimum turning circle (turning diameter) | 13.6 m (44.62 ft.) |
| Approach angle | 36° |
| Departure angle | 27° |
| Ramp-over (brakeover) angle | 24° |
| Climb angle | 45° |
| 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 PLUS |
| Front suspension | Coil spring, Rigid axle suspension, Trailing arm |
| Rear suspension | Rigid axle suspension, Trailing arm, Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
Powertrain & Engine Architecture
The heart of the G 500 V8 is the M273.963 or M273.969 5.5-liter naturally aspirated V8 engine. This engine, a mainstay of Mercedes-Benz’s performance lineup for a period, features a three-valve-per-cylinder design (two intake, one exhaust) and utilizes multi-port fuel injection. The engine’s robust construction and relatively simple design (compared to later turbocharged engines) contribute to its inherent reliability. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, was paired exclusively with this engine. This transmission is known for its smooth shifts and ability to adapt to driving conditions. It features a torque converter lock-up clutch to improve efficiency at cruising speeds. The transmission was designed to handle the substantial torque output of the V8, providing confident acceleration and effortless highway cruising.
Driving Characteristics
The G 500 V8 offered a distinct driving experience. While the G-Class is not known for its nimble handling, the V8 engine provided ample power for confident acceleration in all situations. The 0-60 mph time of around 5.8 seconds was impressive for a vehicle of its size and weight. The 7G-TRONIC transmission contributed to a relaxed driving experience, with smooth gear changes and a willingness to downshift when needed. Compared to the G 350 d (diesel) models, the G 500 V8 offered significantly more power and a more responsive throttle. However, the diesel variants generally provided better fuel economy. The automatic transmission, while convenient, didn’t offer the same level of driver engagement as a manual gearbox, which wasn’t available with this engine option.
Equipment & Trim Levels
The G 500 V8 typically came well-equipped, reflecting its premium positioning. Standard features included leather upholstery, heated front seats, automatic climate control, a premium audio system, and parking sensors. Optional extras were plentiful, including a sunroof, upgraded leather, wood trim, and various off-road packages that added features like a locking differential and skid plates. The interior design, while functional, was relatively conservative, prioritizing durability and practicality over outright luxury. The long-wheelbase configuration provided increased rear passenger legroom compared to the standard G-Class.
Chassis & Braking
The G-Class chassis is a ladder-frame construction, renowned for its strength and rigidity – essential for serious off-road capability. The G 500 V8 featured coil spring suspension with rigid axles front and rear, providing a comfortable ride on paved roads while maintaining excellent articulation off-road. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with ABS. The steering system utilized a recirculating ball mechanism, providing a direct feel but lacking the precision of more modern steering technologies.
Market Reception & Comparison
The G 500 V8 was generally well-received by automotive critics, who praised its powerful engine, comfortable ride, and legendary off-road capabilities. 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-Class offered a unique combination of ruggedness and refinement. The diesel-powered G 350 d offered a more economical alternative, while the AMG-tuned G 63 provided even more extreme performance. The G 500 V8 struck a balance between these two extremes, appealing to buyers who wanted a powerful and capable SUV without the added cost and complexity of the AMG model.
Legacy
The M273 V8 engine, when properly maintained, has proven to be a durable and reliable powerplant. Common issues include occasional oil leaks and the need for regular maintenance of the cooling system. The 7G-TRONIC transmission is also generally reliable, but requires fluid changes at the recommended intervals. Today, the G 500 V8 (W463) holds its value well in the used car market, particularly well-maintained examples. It remains a desirable vehicle for enthusiasts who appreciate its unique character, robust construction, and iconic status. Its blend of luxury, performance, and off-road capability continues to make it a sought-after vehicle among collectors and discerning drivers.
