The Mercedes-Benz GLE 350d V6 4MATIC, produced from March 2015 to October 2018, represents a significant iteration within the W166 GLE SUV generation. Positioned as a mid-range offering in the GLE lineup, it aimed to balance fuel efficiency with respectable performance and luxury. This variant catered to buyers seeking a capable and comfortable SUV with the added benefit of a diesel powertrain, popular in European markets. The GLE (formerly known as the ML-Class) was Mercedes-Benz’s entry into the growing mid-size luxury SUV segment, competing with vehicles like the BMW X5 and Audi Q7.
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (W166) |
| Type | GLE 350d V6 (258 Hp) 4MATIC 9G-TRONIC |
| Start of production | March, 2015 |
| End of production | October, 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.2-7.3 l/100 km (32.7 – 32.2 US mpg) |
| Fuel consumption (extra urban) | 5.9-6.2 l/100 km (39.9 – 37.9 US mpg) |
| Fuel consumption (combined) | 6.4-6.6 l/100 km (36.8 – 35.6 US mpg) |
| CO2 emissions | 169-179 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.1 sec |
| Acceleration 0 – 62 mph | 7.1 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 225 km/h (139.81 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.1 kg/Hp |
| Weight-to-torque ratio | 3.4 kg/Nm |
| Power | 258 Hp @ 3400 rpm |
| Torque | 620 Nm @ 1600-2400 rpm (457.29 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 642.826 |
| Engine displacement | 2987 cm3 (182.28 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant capacity | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 2100 kg (4629.71 lbs.) |
| Max. weight | 2950 kg (6503.64 lbs.) |
| Max load | 850 kg (1873.93 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) |
| AdBlue tank | 32 l (8.45 US gal | 7.04 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 3500 kg (7716.18 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| 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.) |
| Approach angle | 26° |
| Departure angle | 26° |
| Climb angle | 45° |
| Wading depth | 500 mm (19.69 in.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
Powertrain & Engine Architecture
The GLE 350d V6 is powered by the OM 642.826, a 3.0-liter turbocharged diesel V6 engine. This engine is a cornerstone of Mercedes-Benz’s diesel offerings, known for its robust construction and relatively high output. The OM642 engine family utilizes a cast iron block and aluminum cylinder heads, contributing to its durability. The engine employs a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion and reduced emissions. The turbocharger, coupled with an intercooler, enhances power output by forcing more air into the cylinders. The engine produces 258 horsepower at 3400 rpm and a substantial 620 Nm (457 lb-ft) of torque between 1600 and 2400 rpm. This broad torque curve provides strong acceleration and effortless cruising. The engine is paired with Mercedes-Benz’s 9G-TRONIC nine-speed automatic transmission. This transmission is designed for smooth shifts and improved fuel efficiency, utilizing a wide range of gear ratios to keep the engine operating in its optimal power band.
Driving Characteristics
The 9G-TRONIC transmission, while offering a wide range of gears, can sometimes feel hesitant in quick downshifts compared to more performance-oriented transmissions. However, in normal driving conditions, it provides smooth and refined gear changes. The 350d’s torque output allows for brisk acceleration, with a 0-60 mph time of around 6.7 seconds. The 4MATIC all-wheel-drive system provides excellent traction in various weather conditions. Compared to the higher-performance GLE 450 AMG or the more economical GLE 250d, the 350d strikes a balance between power and efficiency. The GLE 250d, with its lower horsepower and torque, felt less capable when fully loaded or towing, while the GLE 450 AMG prioritized performance over fuel economy. The 350d offered a more versatile driving experience, suitable for both daily commuting and longer journeys.
Equipment & Trim Levels
The GLE 350d V6 4MATIC typically came standard with features such as leather upholstery, dual-zone automatic climate control, a power liftgate, and a comprehensive suite of safety features including adaptive cruise control, lane keeping assist, and automatic emergency braking. The infotainment system included a central display screen with Mercedes-Benz’s COMAND interface. Optional extras included a panoramic sunroof, premium audio systems (Burmester), ventilated and massaging front seats, and a rear-seat entertainment system. Trim levels varied slightly depending on the market, but generally offered packages that bundled popular options together. Interior color schemes were customizable, with a range of leather and wood trim options available.
Chassis & Braking
The W166 GLE platform utilizes a robust chassis with a multi-link independent suspension at all four corners. The suspension is tuned for a comfortable ride, absorbing bumps and imperfections in the road effectively. Air suspension was available as an option, further enhancing ride quality and providing adjustable ride height. Braking duties are handled by ventilated discs at the front and solid discs at the rear. The braking system is equipped with ABS (Anti-lock Braking System), Electronic Stability Program (ESP), and Brake Assist. Steering is provided by a power-assisted rack and pinion system, offering precise and responsive handling.
Market Reception & Comparison
The GLE 350d V6 4MATIC was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and spacious interior. Fuel economy was also a strong point, with combined fuel consumption figures ranging from 6.4 to 6.6 liters per 100 kilometers (36.8-35.6 US mpg). Compared to the GLE 250d, the 350d offered a noticeable performance improvement without a significant penalty in fuel economy. Against the GLE 450 AMG, the 350d provided a more sensible option for buyers prioritizing efficiency and comfort over outright performance. Reliability reports suggest that the OM 642 engine is generally durable, although diesel particulate filter (DPF) issues can occur with frequent short trips.
Legacy
The GLE 350d V6 4MATIC remains a popular choice in the used car market, particularly in Europe where diesel engines are still widely favored. The OM 642 engine is known for its longevity, and with proper maintenance, these vehicles can provide many years of reliable service. However, potential buyers should be aware of the potential for DPF issues and the cost of maintaining a complex diesel engine. The W166 GLE platform, as a whole, established Mercedes-Benz as a major player in the mid-size luxury SUV segment, paving the way for the current generation GLE.
