The Mercedes-Benz GLE 450 3.0 (381 Hp) EQ Boost 4MATIC 9G-TRONIC, introduced as part of the V167 GLE SUV facelift in 2023, represents a significant iteration in the mid-size luxury SUV segment. Positioned as a mid-range offering within the GLE lineup, it bridges the gap between the entry-level GLE 350 and the performance-oriented AMG variants. This model incorporates Mercedes-Benz’s EQ Boost mild-hybrid technology, aiming to enhance both fuel efficiency and performance. The V167 generation, launched in 2019, received a substantial refresh in 2023, bringing updated styling, enhanced technology, and refined powertrain options, with the GLE 450 being a key component of that update.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (V167, facelift 2023) |
| Type | GLE 450 3.0 (381 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) | 9.7-11 l/100 km (24.2 – 21.4 US mpg, 29.1 – 25.7 UK mpg, 10.3 – 9.1 km/l) |
| CO2 emissions (WLTP) | 221-251 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.6 sec |
| Acceleration 0 – 62 mph | 5.6 sec |
| Acceleration 0 – 60 mph | 5.3 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 5.9 kg/Hp, 170.5 Hp/tonne |
| Weight-to-torque ratio | 4.5 kg/Nm, 223.7 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 | 381 Hp @ 5800-6100 rpm |
| Torque | 500 Nm @ 1800-5000 rpm (368.78 lb.-ft. @ 1800-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 256 |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92.4 mm (3.64 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC, CAMTRONIC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 2235 kg (4927.33 lbs.) |
| Max. weight | 3230 kg (7120.93 lbs.) |
| Max load | 995 kg (2193.6 lbs.) |
| Trunk (boot) space – minimum | 630 l (22.25 cu. ft.) |
| Trunk (boot) space – maximum | 2065 l (72.92 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 |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
INTRODUCTION
The Mercedes-Benz GLE 450 3.0 (381 Hp) EQ Boost 4MATIC 9G-TRONIC is a luxury SUV that debuted with the 2023 facelift of the V167 generation. Built on the MHA (Modular High Architecture) platform, it represents a blend of performance, comfort, and technology. The “EQ Boost” designation signifies the inclusion of a 48-volt mild-hybrid system, designed to provide a small power boost, improve fuel economy, and enable smoother start/stop operation. This variant occupies a crucial position in the GLE lineup, appealing to buyers seeking a balance between the more affordable base models and the high-performance AMG versions. It’s a direct competitor to vehicles like the BMW X5, Audi Q7, and Porsche Cayenne.
Powertrain & Engine Architecture
At the heart of the GLE 450 is the M 256 3.0-liter inline-six cylinder engine. This engine utilizes direct injection and a twin-scroll turbocharger with an intercooler to produce 381 horsepower and 500 Nm (368.78 lb-ft) of torque. The EQ Boost system adds a further 20 horsepower and 200 Nm (147.51 lb-ft) of torque, providing temporary assistance during acceleration. The 48V electrical system powers an integrated starter-generator (ISG) which enables the mild-hybrid functionality. The engine features CAMTRONIC variable valve timing for optimized efficiency and performance. Paired with the engine is the 9G-TRONIC nine-speed automatic transmission, known for its smooth shifts and wide gear ratio spread. This transmission is specifically tuned to work in conjunction with the EQ Boost system for seamless power delivery.
Driving Characteristics
The GLE 450 3.0 offers a refined and comfortable driving experience. The EQ Boost system provides a noticeable, though subtle, boost during acceleration, contributing to a 0-60 mph time of around 5.3 seconds. The 9G-TRONIC transmission shifts smoothly and efficiently, and the gear ratios are well-suited for both highway cruising and spirited driving. Compared to the base GLE 350, the 450 offers significantly more power and a more responsive feel. While not as aggressively tuned as the AMG variants, the GLE 450 provides ample power for most driving situations. The optional air suspension further enhances ride comfort and allows for adjustable ride height.
Equipment & Trim Levels
The GLE 450 comes standard with a generous array of features, including Mercedes-Benz User Experience (MBUX) infotainment system with a large touchscreen display, Apple CarPlay and Android Auto integration, leather upholstery, heated front seats, and a panoramic sunroof. Optional extras include ventilated front seats, massaging seats, a premium Burmester sound system, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Interior trim options range from wood to aluminum, allowing buyers to personalize the cabin to their preferences. The standard dashboard configuration features dual 12.3-inch displays – one for the instrument cluster and one for the infotainment system.
Chassis & Braking
The GLE 450 utilizes a double-wishbone front suspension and an independent multi-link rear suspension. Air suspension is available as an option, providing adjustable ride height and improved comfort. The braking system consists of ventilated discs on all four wheels. Standard safety features include ABS, electronic stability control, and a suite of airbags. The 4MATIC all-wheel-drive system provides excellent traction in various weather conditions. The suspension is tuned to balance comfort and handling, offering a stable and predictable ride.
Market Reception & Comparison
The GLE 450 has been well-received by automotive critics, who praise its comfortable ride, powerful engine, and advanced technology. Compared to the GLE 350, the 450 offers a significant performance upgrade, while remaining more affordable than the AMG models. Fuel economy is respectable for its class, with the EQ Boost system contributing to improved efficiency. However, some reviewers have noted that the infotainment system can be complex to navigate. Against its competitors, the GLE 450 holds its own in terms of luxury, performance, and technology, offering a compelling package for buyers in the mid-size luxury SUV segment.
Legacy
The M 256 engine, coupled with the 9G-TRONIC transmission and EQ Boost technology, represents a significant step forward in powertrain efficiency and refinement. While long-term reliability data is still emerging for this specific configuration, Mercedes-Benz has a generally good reputation for build quality and durability. The GLE 450 is expected to hold its value well in the used car market, appealing to buyers seeking a well-equipped and capable luxury SUV. The integration of mild-hybrid technology positions this variant as a transitional model, paving the way for future fully electric Mercedes-Benz SUVs.
