The Mercedes-Benz GLE 300d 4MATIC, part of the C167 GLE Coupe facelift introduced in 2023, represents a compelling blend of luxury, performance, and efficiency within the mid-size SUV coupe segment. This variant, powered by a 2.0-liter turbocharged diesel engine with EQ Boost mild-hybrid technology, occupies a significant position in the GLE Coupe lineup, offering a balance between the more powerful AMG models and the entry-level trims. It caters to buyers seeking a refined driving experience with respectable performance and improved fuel economy. Production began in 2023 and continues as a key offering within the current generation GLE Coupe.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE Coupe (C167, 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 | Coupe, SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 6.7-7.5 l/100 km (35.1 – 31.4 US mpg, 42.2 – 37.7 UK mpg, 14.9 – 13.3 km/l) |
| CO2 emissions (WLTP) | 177-197 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 | 226 km/h (140.43 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 8.6 kg/Hp, 116.2 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 237.6 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 | 2315 kg (5103.7 lbs.) |
| Max. weight | 2950 kg (6503.64 lbs.) |
| Max load | 635 kg (1399.94 lbs.) |
| Trunk (boot) space – minimum | 655 l (23.13 cu. ft.) |
| Trunk (boot) space – maximum | 1790 l (63.21 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Max. roof load | 75 kg (165.35 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 | 4941 mm (194.53 in.) |
| Width | 2018 mm (79.45 in.) |
| Width including mirrors | 2157 mm (84.92 in.) |
| Height | 1730 mm (68.11 in.) |
| Wheelbase | 2935 mm (115.55 in.) |
| Front track | 1680 mm (66.14 in.) |
| Rear (Back) track | 1728 mm (68.03 in.) |
| Front overhang | 925 mm (36.42 in.) |
| Rear overhang | 1081 mm (42.56 in.) |
| Ride height (ground clearance) | 205 mm (8.07 in.) |
| Minimum turning circle (turning diameter) | 11.87 m (38.94 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 |
| Tires size | 275/50 R20 |
| Wheel rims size | 20 |
Powertrain & Engine Architecture
The heart of the GLE 300d is the OM 654 M 2.0-liter inline-four cylinder diesel engine. This engine is a highly advanced design, featuring a cast iron block, aluminum cylinder head, and a sophisticated commonrail direct injection system operating at pressures up to 2,700 bar. It utilizes a sequential twin-turbocharger setup with variable geometry turbines (VGT) to minimize turbo lag and deliver strong torque across a broad rev range. The EQ Boost system adds a 48-volt mild-hybrid component, integrating a 20 horsepower electric motor and a 0.9 kWh lithium-ion battery. This system enables features like extended coasting, smoother start/stop operation, and a small power boost during acceleration. The engine is paired with Mercedes-Benz’s 9G-TRONIC nine-speed automatic transmission, known for its smooth shifts and wide gear ratios. This transmission is specifically tuned to complement the engine’s torque characteristics, optimizing both fuel efficiency and performance.
Driving Characteristics
The GLE 300d 4MATIC offers a comfortable and refined driving experience. While not as overtly sporty as the AMG variants, the 269 horsepower and 550 Nm (405.66 lb-ft) of torque provide ample power for everyday driving and confident highway passing. The EQ Boost system contributes to a responsive feel, particularly during initial acceleration. The 9G-TRONIC transmission shifts smoothly and efficiently, and the gear ratios are well-chosen to keep the engine in its optimal power band. Compared to the higher-output GLE 450 or AMG models, the 300d prioritizes fuel economy and relaxed cruising. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as the available manual options in some other markets. However, paddle shifters are included, allowing for some degree of manual control.
Equipment & Trim Levels
The GLE 300d 4MATIC typically comes well-equipped as standard. Key features include Mercedes-Benz User Experience (MBUX) infotainment system with a large touchscreen display, Apple CarPlay and Android Auto integration, leather upholstery, heated front seats, automatic climate control, and a comprehensive suite of safety features including automatic emergency braking, lane keeping assist, and adaptive cruise control. Optional extras include air suspension, premium sound systems, panoramic sunroof, and a variety of interior trim options. The trim level often dictates the availability of certain features, with higher trims offering more luxurious appointments and advanced technology.
Chassis & Braking
The GLE Coupe features a sophisticated chassis design with a multi-link independent suspension at all four corners. Air suspension is available as an option, providing adjustable ride height and improved comfort. The 300d variant typically utilizes slightly softer spring rates and stabilizer bars compared to the higher-performance models, prioritizing ride comfort. Braking duties are handled by ventilated discs on all wheels, providing ample stopping power. The 4MATIC all-wheel-drive system provides excellent traction in various weather conditions, distributing torque between the front and rear axles as needed.
Market Reception & Comparison
The GLE 300d 4MATIC has been generally well-received by automotive critics. It’s praised for its refined driving experience, comfortable interior, and impressive fuel economy for a vehicle of its size and class. Compared to the gasoline-powered GLE 450, the 300d offers better fuel efficiency and a more relaxed driving character. However, the GLE 450 provides more outright performance. The diesel engine’s longevity and relatively lower maintenance costs are also seen as advantages. Reliability has been generally good, although some owners have reported minor issues with the infotainment system.
Legacy
The OM 654 engine family, including the version found in the GLE 300d, is considered a robust and reliable powerplant. The integration of mild-hybrid technology enhances its efficiency and reduces emissions. In the used car market, the GLE 300d 4MATIC represents a compelling value proposition, offering a luxurious and well-equipped SUV with good fuel economy and a proven powertrain. Its long-term reliability is expected to be good, making it a desirable option for buyers seeking a premium SUV that balances performance, efficiency, and comfort.
