The Mercedes-Benz GLE 400 V6 4MATIC, produced between March 2015 and October 2016, represents a mid-range offering within the W166 GLE SUV generation. Positioned above the GLE 350 and below the performance-oriented AMG variants, the GLE 400 aimed to balance luxury, performance, and practicality for buyers seeking a capable and refined SUV. It served as a key model in Mercedes-Benz’s lineup, competing with vehicles like the BMW X5, Audi Q7, and Porsche Cayenne. This variant combined a potent 3.0-liter V6 engine with a sophisticated all-wheel-drive system and the 7G-TRONIC PLUS automatic transmission, offering a compelling package for the North American and global markets.
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (W166) |
| Type | GLE 400 V6 (333 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | March, 2015 |
| End of production | October, 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 11.2-11.5 l/100 km (21 – 20.5 US mpg) |
| Fuel consumption (extra urban) | 7.6-7.8 l/100 km (30.9 – 30.2 US mpg) |
| Fuel consumption (combined) | 8.8-9.2 l/100 km (26.7 – 25.6 US mpg) |
| CO2 emissions | 209-215 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 247 km/h (153.48 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.2 kg/Hp |
| Weight-to-torque ratio | 4.3 kg/Nm |
| Power | 333 Hp @ 5250-6000 rpm |
| Torque | 480 Nm @ 1600-4000 rpm (354.03 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 276.821 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 82.1 mm (3.23 in.) |
| Compression ratio | 10.5:1 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant capacity | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 2055 kg (4530.5 lbs.) |
| Max. weight | 2900 kg (6393.41 lbs.) |
| Max load | 845 kg (1862.91 lbs.) |
| Trunk (boot) space – minimum | 690 l (24.37 cu. ft.) |
| Trunk (boot) space – maximum | 2010 l (70.98 cu. ft.) |
| Fuel tank capacity | 93 l (24.57 US gal | 20.46 UK gal) |
| Length | 4819 mm (189.72 in.) |
| Width | 1935 mm (76.18 in.) |
| Width including mirrors | 2141 mm (84.29 in.) |
| Height | 1796 mm (70.71 in.) |
| Wheelbase | 2915 mm (114.76 in.) |
| Front track | 1648 mm (64.88 in.) |
| Rear track | 1663 mm (65.47 in.) |
| Front overhang | 890 mm (35.04 in.) |
| Rear overhang | 1014 mm (39.92 in.) |
| Ride height (ground clearance) | 202 mm (7.95 in.) |
| Drag coefficient (Cd) | 0.35 |
| Minimum turning circle | 11.8 m (38.71 ft.) |
| Gears | 7 |
| Gearbox type | automatic transmission G-TRONIC PLUS |
Powertrain & Engine Architecture
The heart of the GLE 400 is the M276.821 3.0-liter V6 engine. This engine utilizes direct injection and is equipped with twin turbochargers, providing a significant boost in power and torque. The engine’s architecture features a 60-degree V-angle, contributing to a smoother power delivery and reduced vibrations. The M276 engine family is known for its robust construction and relatively high thermal efficiency. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, is renowned for its smooth and quick shifts. It features a torque converter lock-up clutch that engages across multiple gears, improving fuel efficiency. The 4MATIC all-wheel-drive system employs a multi-plate clutch to distribute torque between the front and rear axles, providing enhanced traction in various driving conditions. The system is primarily rear-wheel drive biased, offering a more sporty driving experience.
Driving Characteristics
The GLE 400 4MATIC delivers a refined and capable driving experience. The 333 horsepower and 354 lb-ft of torque provide ample power for both everyday driving and more spirited acceleration. The 0-60 mph sprint takes approximately 5.8 seconds, making it a relatively quick SUV for its class. The 7G-TRONIC PLUS transmission contributes to smooth gear changes, and the all-wheel-drive system provides excellent grip and stability. Compared to the base GLE 350, the GLE 400 offers noticeably stronger acceleration and a more confident feel. While not as aggressively tuned as the AMG variants, the GLE 400 strikes a good balance between performance and comfort. The gear ratios are optimized for both fuel efficiency and responsive acceleration, with a relatively tall seventh gear for highway cruising.
Equipment & Trim Levels
The GLE 400 typically came well-equipped with standard features such as leather upholstery, power-adjustable front seats with memory function, dual-zone automatic climate control, and a premium audio system. Standard safety features included adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included a panoramic sunroof, ventilated front seats, a rear-seat entertainment system, and various driver-assistance packages. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences. The dashboard layout is typical of Mercedes-Benz, with a focus on elegance and functionality.
Chassis & Braking
The W166 GLE platform utilizes a robust chassis with a multi-link independent suspension at all four corners. The suspension is tuned to provide a comfortable ride while maintaining good handling characteristics. Air suspension was available as an option, further enhancing ride quality and allowing for adjustable ride height. The GLE 400 features ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) are standard features, enhancing safety and control. The steering system is a rack-and-pinion setup with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The GLE 400 was generally well-received by automotive critics, who praised its powerful engine, comfortable ride, and luxurious interior. It was often seen as a strong competitor to the BMW X5 and Audi Q7. Fuel economy was considered average for its class, with combined figures around 26.7 mpg. Reliability reports suggest that the M276 engine is generally reliable, although some owners have reported issues with the turbochargers and fuel injectors. Compared to the GLE 350, the GLE 400 offered a significant performance upgrade, while the AMG variants provided even more power and a sportier driving experience. The GLE 400 represented a sweet spot for buyers seeking a balance of luxury, performance, and practicality.
Legacy
The GLE 400 V6 4MATIC has established itself as a solid and dependable luxury SUV in the used car market. The M276 engine, while requiring regular maintenance, is known for its longevity when properly cared for. The 7G-TRONIC PLUS transmission is also generally reliable. As with any used vehicle, potential buyers should have a pre-purchase inspection performed by a qualified mechanic to identify any potential issues. The W166 GLE generation, including the 400 variant, remains a popular choice for buyers seeking a spacious, comfortable, and capable SUV with a touch of Mercedes-Benz prestige.
