The Mercedes-Benz GLE Coupe (C167), specifically the GLE 400d 4MATIC variant equipped with the 9G-TRONIC automatic transmission, represents a compelling blend of performance, luxury, and efficiency within the mid-size SUV coupe segment. Produced from 2020 to 2023, this model occupied a significant position in Mercedes-Benz’s lineup, appealing to buyers seeking a sportier alternative to the traditional GLE SUV while retaining the brand’s renowned comfort and technology.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE Coupe (C167) |
| Type (Engine) | GLE 400d (330 Hp) 4MATIC 9G-TRONIC |
| Start of production | 2020 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe, SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| Fuel consumption at very high speed (WLTP) | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| CO2 emissions (WLTP) | 194-228 g/km |
| Fuel consumption (economy) – urban | 8.5-9.4 l/100 km (27.7 – 25 US mpg, 33.2 – 30.1 UK mpg, 11.8 – 10.6 km/l) |
| Fuel consumption (economy) – extra urban | 5.9-6.3 l/100 km (39.9 – 37.3 US mpg, 47.9 – 44.8 UK mpg, 16.9 – 15.9 km/l) |
| Fuel consumption (economy) – combined | 6.9-7.4 l/100 km (34.1 – 31.8 US mpg, 40.9 – 38.2 UK mpg, 14.5 – 13.5 km/l) |
| CO2 emissions | 183-195 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.7 sec |
| Acceleration 0 – 62 mph | 5.7 sec |
| Acceleration 0 – 60 mph | 5.4 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6d ISC-FCM |
| Weight-to-power ratio | 6.7 kg/Hp, 148.6 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 315.3 Nm/tonne |
| Power | 330 Hp |
| Power per litre | 112.8 Hp/l |
| Torque | 700 Nm @ 1200-3200 rpm (516.29 lb.-ft. @ 1200-3200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 656.929 |
| Engine displacement | 2925 cm3 (178.49 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 2220 kg (4894.26 lbs.) |
| Max. weight | 3040 kg (6702.05 lbs.) |
| Max load | 820 kg (1807.79 lbs.) |
| Trunk (boot) space – minimum | 655 l (23.13 cu. ft.) |
| Trunk (boot) space – maximum | 1790 l (63.21 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Permitted trailer load with brakes (12%) | 2700 kg (5952.48 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4939 mm (194.45 in.) |
| Width | 2010 mm (79.13 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 | 1726 mm (67.95 in.) |
| Front overhang | 925 mm (36.42 in.) |
| Rear overhang | 1079 mm (42.48 in.) |
| Ride height (ground clearance) | 206 mm (8.11 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size | 275/55 R19 |
| Wheel rims size | 8.5J x 19 |
Positioning and Market Role
The GLE 400d 4MATIC occupied a mid-range position within the C167 GLE Coupe lineup. It served as a step up from the base GLE 300d models, offering significantly more power and torque for enhanced performance. Compared to the higher-performance AMG variants (like the GLE 53 or 63), the 400d prioritized a balance between spirited driving and fuel efficiency. In the European market, where diesel engines are more prevalent, the 400d was a popular choice due to its strong fuel economy and substantial torque output, making it well-suited for long-distance travel and towing. In the US market, where diesel adoption is lower, it represented a more efficient alternative to the gasoline-powered GLE models, though it didn’t achieve the same sales volume.
Engine and Transmission
The heart of the GLE 400d is Mercedes-Benz’s OM 656.929, a 2.9-liter inline-six cylinder diesel engine. This engine is a significant departure from the older V6 diesel designs, featuring a modular design with integrated diesel particulate filter (DPF) and advanced technologies like CAMMATIC variable valve timing and a two-stage turbocharging system. These innovations contribute to both increased power output (330 hp) and improved fuel efficiency. The engine’s substantial 700 Nm (516 lb-ft) of torque, available from a low 1200 rpm, provides effortless acceleration and strong pulling power. Paired with the 9G-TRONIC nine-speed automatic transmission, the powertrain delivers smooth and responsive gear changes, further enhancing the driving experience. The 9G-TRONIC is known for its wide gear ratio spread, contributing to both fuel economy and performance.
Performance and Handling
The GLE 400d 4MATIC delivers a 0-60 mph acceleration time of approximately 5.4 seconds and a top speed of 149 mph. The 4MATIC all-wheel-drive system provides excellent traction in various conditions, enhancing stability and control. The GLE Coupe’s suspension, typically featuring air suspension as an option, offers a comfortable ride while maintaining relatively controlled handling. The coupe body style does introduce a slightly firmer ride compared to the standard GLE SUV, but it also contributes to a more dynamic and engaging driving experience. Standard features like ABS and electric power steering further contribute to the vehicle’s safety and ease of use.
Interior and Technology
The interior of the GLE 400d 4MATIC is characterized by Mercedes-Benz’s luxurious appointments and advanced technology. The MBUX infotainment system, with its voice control capabilities and intuitive interface, is a central feature. The GLE Coupe offers seating for five passengers and a generous cargo capacity of 23.13 to 63.21 cubic feet, depending on the rear seats’ configuration. Available features include premium leather upholstery, ambient lighting, a panoramic sunroof, and a comprehensive suite of driver-assistance systems, such as adaptive cruise control, lane-keeping assist, and automatic emergency braking.
Comparison with Siblings
Compared to the GLE 300d, the 400d offers a significant power upgrade (330 hp vs. around 272 hp) and a noticeable increase in torque. This translates to quicker acceleration and more effortless performance, especially when fully loaded or towing. However, the 300d is more fuel-efficient and generally more affordable. In contrast to the AMG GLE 53 and 63 models, the 400d prioritizes efficiency and refinement over outright performance. The AMG models boast significantly more horsepower and a more aggressive driving experience, but at the expense of fuel economy and a higher price tag. The 400d, therefore, represents a sweet spot for buyers seeking a balance between performance, luxury, and practicality.
Reliability and Maintenance
The OM 656 diesel engine has generally proven to be a reliable unit, but like all modern diesel engines, it requires diligent maintenance. Regular oil changes, fuel filter replacements, and DPF maintenance are crucial for ensuring long-term reliability. The complex emissions control systems can be prone to issues if not properly maintained. The 9G-TRONIC transmission is generally reliable, but fluid changes should be performed according to the manufacturer’s recommendations. Overall, the GLE 400d 4MATIC, when properly maintained, offers a durable and refined ownership experience.
