The Mercedes-Benz GLE 450 4MATIC Coupe (C167, facelifted in 2024) represents a blend of luxury, performance, and technology within the mid-size SUV segment. Introduced as part of the C167 generation’s refresh, this variant combines a 3.0-liter inline-six engine with mild hybrid technology (EQ Boost) and a 9G-TRONIC automatic transmission, delivering a sophisticated driving experience. Positioned as a mid-to-upper trim level within the GLE Coupe lineup, it caters to buyers seeking a balance between spirited performance and refined comfort. Production began in 2024, building upon the foundation laid by the initial C167 models launched in 2020.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE Coupe (C167, facelift 2023) |
| Type | GLE 450 3.0 (375 Hp) EQ Boost 4MATIC 9G-TRONIC |
| Start of production | 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe, SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 12.4 l/100 km (19 US mpg) |
| Fuel consumption (extra urban) | 9.4 l/100 km (25 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 5.3 sec |
| Emission standard | SULEV30 |
| Weight-to-power ratio | 6.2 kg/Hp |
| Weight-to-torque ratio | 4.6 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.) |
| Power | 375 Hp @ 5500-6100 rpm |
| Torque | 500 Nm @ 1600-4500 rpm (368.78 lb.-ft.) |
| 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 |
| 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 | 2320 kg (5114.72 lbs.) |
| Trunk space (minimum) | 655 l (23.13 cu. ft.) |
| Trunk space (maximum) | 1790 l (63.21 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Length | 4941 mm (194.53 in.) |
| Width | 2018 mm (79.45 in.) |
| Height | 1730 mm (68.11 in.) |
| Wheelbase | 2935 mm (115.55 in.) |
| Gears/Transmission | 9 gears, automatic transmission G-TRONIC |
Powertrain & Engine Architecture
The heart of the GLE 450 Coupe is the M 256 3.0-liter inline-six engine. This engine utilizes direct injection and a twin-scroll turbocharger, along with an intercooler, to deliver a potent 375 horsepower and 500 Nm (368.78 lb-ft) of torque. A key feature is the integration of Mercedes-Benz’s EQ Boost mild hybrid system. This system employs a 48-volt electrical architecture and incorporates a 20 horsepower electric motor positioned between the engine and the transmission. The EQ Boost system provides several benefits, including smoother start/stop operation, energy recovery during deceleration, and a small power boost during acceleration. The 9G-TRONIC nine-speed automatic transmission is standard, offering smooth and efficient gear changes. This transmission is known for its wide gear ratio spread, contributing to both fuel economy and performance.
Driving Characteristics
The GLE 450 Coupe offers a refined and capable driving experience. The combination of the inline-six engine and the EQ Boost system provides strong and readily available power across the rev range. Acceleration from 0 to 60 mph is achieved in 5.3 seconds. The 9G-TRONIC transmission contributes to a comfortable ride, with well-spaced gear ratios that keep the engine in its optimal power band. Compared to the higher-performance AMG variants, the GLE 450 prioritizes comfort and efficiency over outright speed. While it may not offer the same level of visceral excitement as the AMG models, it provides ample power for everyday driving and highway cruising. The 4MATIC all-wheel-drive system ensures confident handling in various weather conditions.
Equipment & Trim Levels
The GLE 450 Coupe comes standard with a comprehensive array of features, including Mercedes-Benz’s MBUX infotainment system with a large touchscreen display, premium upholstery, and a panoramic sunroof. Standard safety features include automatic emergency braking, lane keeping assist, and adaptive cruise control. Optional extras include advanced driver-assistance systems, such as Evasive Steering Assist and PRE-SAFE Impulse Side, as well as upgraded audio systems and interior trim options. The interior typically features leather upholstery, wood trim, and metal accents, creating a luxurious and sophisticated ambiance.
Chassis & Braking
The GLE 450 Coupe utilizes a sophisticated chassis design featuring a double-wishbone front suspension and an independent multi-link rear suspension. Air suspension is available as an option, further enhancing ride comfort and providing adjustable ride height. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. Standard safety features include ABS (Anti-lock braking system) and electronic stability control. The steering system is a rack-and-pinion setup with electric power steering, offering precise and responsive handling.
Market Reception & Comparison
The GLE 450 Coupe has been generally well-received by automotive critics, praised for its comfortable ride, refined interior, and strong performance. Its fuel economy figures of 12.4 l/100 km (19 US mpg) urban and 9.4 l/100 km (25 US mpg) extra urban are competitive within its class. Compared to the GLE 350, the 450 offers a significant power upgrade and a more engaging driving experience. Compared to the higher-performance AMG GLE 53 and 63 models, the 450 provides a more balanced blend of performance and efficiency, appealing to a wider range of buyers. Reliability reports suggest that the M 256 engine has proven to be relatively reliable, although regular maintenance is crucial.
Legacy
The Mercedes-Benz GLE 450 Coupe (C167) represents a significant step forward in the evolution of the mid-size luxury SUV. Its combination of advanced technology, refined performance, and luxurious features has established it as a popular choice among discerning buyers. The M 256 engine, with its EQ Boost mild hybrid system, showcases Mercedes-Benz’s commitment to efficiency and innovation. On the used car market, these models are holding their value well, particularly those with low mileage and a comprehensive service history. The GLE 450 Coupe is expected to remain a desirable and sought-after vehicle for years to come, offering a compelling blend of luxury, performance, and technology.
