The Mercedes-Benz GLE 300d 4MATIC, introduced with the V167 facelift in 2023, represents a significant offering in the mid-size luxury SUV segment. This variant combines a 2.0-liter turbocharged diesel engine with mild-hybrid technology (EQ Boost) and a 9-speed automatic transmission, delivering a balance of performance, efficiency, and refinement. Positioned as a core model within the GLE lineup, the 300d caters to buyers seeking a comfortable and capable SUV with lower running costs than its higher-powered siblings. Production began in 2023 and continues as a key component of the V167 generation.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (V167, facelift 2023) |
| Type (Engine) | GLE 300d (269 Hp) EQ Boost 4MATIC 9G-TRONIC |
| Start of production | 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5-7 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 6.8-7.8 l/100 km (34.6 – 30.2 US mpg, 41.5 – 36.2 UK mpg, 14.7 – 12.8 km/l) |
| CO2 emissions (WLTP) | 179-204 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.9 sec |
| Acceleration 0 – 62 mph | 6.9 sec |
| Acceleration 0 – 60 mph | 6.6 sec |
| Maximum speed | 230 km/h (142.92 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 8.4 kg/Hp, 119 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 243.4 Nm/tonne |
| Gross battery capacity | 0.9 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the trunk |
| 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 | 269 Hp @ 4200 rpm |
| Torque | 550 Nm @ 1800-2200 rpm (405.66 lb.-ft. @ 1800-2200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 654 M |
| Engine displacement | 1993 cm3 (121.62 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.3 mm (3.71 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 2260 kg (4982.45 lbs.) |
| Max. weight | 2970 kg (6547.73 lbs.) |
| Max load | 710 kg (1565.28 lbs.) |
| Trunk (boot) space – minimum | 630 l (22.25 cu. ft.) |
| Trunk (boot) space – maximum | 2055 l (72.57 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2700 kg (5952.48 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 108 kg (238.1 lbs.) |
| Length | 4924 mm (193.86 in.) |
| Width | 2010 mm (79.13 in.) |
| Width including mirrors | 2157 mm (84.92 in.) |
| Height | 1797 mm (70.75 in.) |
| Wheelbase | 2995 mm (117.91 in.) |
| Front track | 1680 mm (66.14 in.) |
| Rear (Back) track | 1726 mm (67.95 in.) |
| Front overhang | 925 mm (36.42 in.) |
| Rear overhang | 1004 mm (39.53 in.) |
| Ride height (ground clearance) | 205 mm (8.07 in.) |
| Minimum turning circle (turning diameter) | 12.02 m (39.44 ft.) |
| Front suspension | Double wishbone, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Gearbox | 9 gears, automatic transmission G-TRONIC |
Powertrain & Engine Architecture
The heart of the GLE 300d is the OM 654 M, a 2.0-liter inline-four cylinder diesel engine. This engine utilizes a sophisticated twin-turbocharger setup with variable geometry turbines (VGT) to deliver strong torque across a wide rev range. The engine employs a common-rail direct injection system operating at extremely high pressures (2700 bar) for optimized combustion and reduced emissions. The DOHC valvetrain with four valves per cylinder further enhances breathing and efficiency. The EQ Boost system adds a 48-volt mild-hybrid component, integrating a 20 hp electric motor and a 0.9 kWh lithium-ion battery. This system provides a boost during acceleration, enables smoother start/stop operation, and allows for regenerative braking to recoup energy. The 9G-TRONIC automatic transmission, a nine-speed unit, is specifically tuned to complement the engine’s characteristics, offering smooth and efficient gear changes.
Driving Characteristics
The GLE 300d 4MATIC provides a comfortable and refined driving experience. While not as overtly sporty as some of its higher-powered counterparts, the 269 hp and 550 Nm of torque deliver ample performance for everyday driving and highway cruising. Acceleration from 0-60 mph takes approximately 6.6 seconds. The 9G-TRONIC transmission is well-programmed, providing seamless shifts and keeping the engine in its optimal power band. The EQ Boost system provides a noticeable, albeit subtle, boost during acceleration, enhancing responsiveness. The 4MATIC all-wheel-drive system ensures confident traction in various weather conditions. Compared to the GLE 450, the 300d offers less outright power, but its superior fuel economy and lower weight contribute to a more balanced feel.
Equipment & Trim Levels
The GLE 300d typically comes well-equipped as standard. Features generally include Mercedes-Benz User Experience (MBUX) infotainment system with a large touchscreen display, Apple CarPlay and Android Auto integration, leather upholstery, power-adjustable front seats with memory function, dual-zone automatic climate control, and a comprehensive suite of safety features including automatic emergency braking, lane-keeping assist, and adaptive cruise control. Optional extras often include a panoramic sunroof, premium Burmester sound system, air suspension, and a variety of interior trim options. Trim levels beyond the base model often add cosmetic enhancements and additional convenience features.
Chassis & Braking
The GLE 300d utilizes a sophisticated chassis design featuring a double-wishbone front suspension and an independent multi-link rear suspension. Air suspension is often available as an option, providing adjustable ride height and improved comfort. The 4MATIC all-wheel-drive system distributes power between the front and rear axles as needed, optimizing traction and stability. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. Standard safety features include ABS, electronic stability control, and traction control.
Market Reception & Comparison
The GLE 300d has been well-received by automotive critics as a practical and efficient luxury SUV. Its fuel economy, ranging from 30.2 to 34.6 US mpg, is a significant advantage over the more powerful gasoline-powered GLE models. While some reviewers noted that the engine can be slightly noisy under hard acceleration, the overall refinement and comfort levels were praised. Compared to competitors like the BMW X5 and Audi Q7, the GLE 300d offers a compelling combination of luxury, technology, and fuel efficiency. Reliability reports have been generally positive, with the OM 654 engine proving to be a robust and durable unit.
Legacy
The OM 654 engine family, of which the GLE 300d’s powerplant is a member, has established a reputation for reliability and longevity. The integration of mild-hybrid technology in the GLE 300d represents a step towards greater fuel efficiency and reduced emissions. On the used car market, the V167 GLE 300d is expected to hold its value well due to its desirable features, comfortable ride, and relatively low running costs. The combination of a proven diesel engine, a sophisticated transmission, and a well-appointed interior makes it a compelling choice for buyers seeking a practical and refined luxury SUV.
