The Mercedes-Benz G 450d Long (W465), introduced in 2024, represents the latest iteration of the iconic G-Class, blending legendary off-road capability with modern luxury and efficiency. This variant, positioned as a mid-range offering within the long-wheelbase G-Class lineup, features a mild-hybrid diesel powertrain designed to deliver both robust performance and reduced emissions. The “Long” designation indicates an extended wheelbase, providing increased rear passenger space and cargo capacity compared to the standard G-Class. It continues the G-Class tradition of a body-on-frame construction, ensuring exceptional durability and off-road prowess.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | G-class |
| Generation | G-class Long (W465) |
| Type | G 450d (367 Hp) Mild Hybrid 4MATIC 9G-TRONIC |
| Start of production | 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Off-road vehicle |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 8.7-10 l/100 km (27 – 23.5 US mpg) |
| CO2 emissions (WLTP) | 227-261 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 6.8 kg/Hp |
| Weight-to-torque ratio | 3.3 kg/Nm |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 20 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Power | 367 Hp @ 4000 rpm |
| Torque | 750 Nm @ 1350-2800 rpm (553.17 lb.-ft. @ 1350-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 656.830 |
| Engine displacement | 2989 cm3 (182.4 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 2480 kg (5467.46 lbs.) |
| Max. weight | 3200 kg (7054.79 lbs.) |
| Max load | 720 kg (1587.33 lbs.) |
| Trunk (boot) space – minimum | 640 l (22.6 cu. ft.) |
| Trunk (boot) space – maximum | 2010 l (70.98 cu. ft.) |
| Fuel tank capacity | 100 l (26.42 US gal) |
| AdBlue tank | 31.6 l (8.35 US gal) |
| Max. roof load | 150 kg (330.69 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 | 4825 mm (189.96 in.) |
| Width | 1931 mm (76.02 in.) |
| Width including mirrors | 2187 mm (86.1 in.) |
| Height | 2042 mm (80.39 in.) |
| Wheelbase | 2890 mm (113.78 in.) |
| Front track | 1638 mm (64.49 in.) |
| Rear (Back) track | 1638 mm (64.49 in.) |
| Front overhang | 885 mm (34.84 in.) |
| Rear overhang | 849 mm (33.43 in.) |
| Ride height (ground clearance) | 241 mm (9.49 in.) |
| Minimum turning circle (turning diameter) | 13.6 m (44.62 ft.) |
| Approach angle | 31° |
| Departure angle | 30° |
| Ramp-over (brakeover) angle | 26° |
| Climb angle | 45° |
| Wading depth | 700 mm (27.56 in.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Double wishbone, Independent coil spring, Transverse stabilizer |
| Rear suspension | Rigid axle suspension, Transverse stabilizer, Coil spring |
| Front brakes | Ventilated discs, 354×32 mm |
| Rear brakes | Ventilated discs, 345×22 mm |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/60 R18 |
| Wheel rims size | 7.5J x 18 |
Powertrain & Engine Architecture
The G 450d Long is powered by the OM 656.830, a 3.0-liter inline-six cylinder diesel engine. This engine benefits from a mild-hybrid system, incorporating a 48-volt electrical architecture and an integrated starter-generator (ISG). The ISG provides power assistance during acceleration, enables smoother start/stop functionality, and allows for regenerative braking, contributing to improved fuel economy. The engine utilizes a sophisticated diesel commonrail fuel injection system and a bi-turbocharger setup with an intercooler, delivering 367 horsepower at 4000 rpm and a substantial 750 Nm (553 lb-ft) of torque between 1350 and 2800 rpm. The engine’s design incorporates features like a stepped combustion process and a near-to-wall combustion strategy to minimize emissions. The engine is paired with Mercedes-Benz’s 9G-TRONIC automatic transmission, a nine-speed unit known for its smooth shifting and efficiency.
Driving Characteristics
The G 450d Long offers a unique driving experience, balancing off-road capability with on-road comfort. The mild-hybrid system provides a noticeable boost in responsiveness during acceleration, while the 9G-TRONIC transmission ensures smooth gear changes. While not as overtly sporty as some competitors, the G 450d delivers ample power for everyday driving and confident highway cruising. The long wheelbase contributes to a more stable ride, particularly at higher speeds. Off-road, the G-Class’s legendary abilities are fully intact, with its robust construction, three locking differentials, and high ground clearance allowing it to tackle challenging terrain with ease. The automatic transmission is well-suited to off-road driving, providing precise control and preventing wheelspin.
Equipment & Trim Levels
The G 450d Long typically comes well-equipped with standard features including leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of driver-assistance systems. These systems include adaptive cruise control, lane-keeping assist, and automatic emergency braking. The infotainment system features a large touchscreen display with navigation, Apple CarPlay, and Android Auto compatibility. Optional extras include a sunroof, upgraded leather options, and various exterior styling enhancements. The interior design emphasizes luxury and functionality, with durable materials and a focus on practicality.
Chassis & Braking
The G 450d Long retains the traditional body-on-frame construction that has defined the G-Class for decades. This provides exceptional strength and durability, making it ideal for off-road use. The suspension system consists of a double-wishbone independent setup at the front and a rigid axle suspension with coil springs and a transverse stabilizer at the rear. The braking system features ventilated discs on all four wheels, providing ample stopping power. The G-Class also incorporates advanced braking technologies such as ABS (Anti-lock Braking System) and electronic brake-force distribution.
Market Reception & Comparison
The G 450d Long has been well-received by critics and consumers alike, praised for its blend of luxury, performance, and off-road capability. Compared to the G 550 (petrol V8) variant, the G 450d offers improved fuel economy and a more accessible price point. While the G 550 provides more outright power, the G 450d’s torque-rich diesel engine delivers strong performance in a wider range of driving conditions. The mild-hybrid system further enhances its efficiency, making it a more environmentally conscious choice. Its main competitors include other high-end luxury SUVs, such as the Land Rover Range Rover and the BMW X7, but the G-Class stands out due to its unique heritage and unparalleled off-road prowess.
Legacy
The OM 656 engine family, including the OM 656.830 found in the G 450d, has proven to be a reliable and durable powertrain. Early reports suggest that the mild-hybrid system adds to this reliability by reducing stress on the engine. As a relatively new model, the long-term reliability of the G 450d Long is still being assessed, but the G-Class’s reputation for longevity suggests it will hold its value well in the used car market. The combination of its iconic design, robust construction, and modern technology ensures that the G 450d Long will remain a desirable and collectible vehicle for years to come.
