The Mercedes-Benz GLE 350 V6, produced between 2015 and 2018 as part of the W166 GLE SUV generation, represented a core offering in Mercedes-Benz’s mid-size luxury SUV lineup. Positioned as a balance between performance and efficiency, the GLE 350 V6 aimed to provide a comfortable and capable driving experience for families and individuals alike. It served as a popular alternative to the more performance-focused AMG variants and the diesel-powered GLE 350 d models available in European markets. This variant was primarily sold in North America and other markets where gasoline engines were preferred.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (W166) |
| Type | GLE 350 V6 (302 Hp) 7G-TRONIC PLUS |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg) |
| Fuel consumption (extra urban) | 10.2 l/100 km (23.1 US mpg, 27.7 UK mpg) |
| Fuel consumption (combined) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 7.5 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Weight-to-power ratio | 7 kg/Hp, 143.1 Hp/tonne |
| Weight-to-torque ratio | 5.7 kg/Nm, 175.4 Nm/tonne |
| Power | 302 Hp @ 6500 rpm |
| Power per litre | 86.3 Hp/l |
| Torque | 370 Nm @ 3500-5250 rpm (272.9 lb.-ft. @ 3500-5250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 276.955 |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.9 mm (3.66 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 12:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 2110 kg (4651.75 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) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 3000 kg (6613.87 lbs.) |
| Length | 4803 mm (189.09 in.) |
| Width | 1981 mm (77.99 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 | 1651 mm (65 in.) |
| Front overhang | 874 mm (34.41 in.) |
| Rear overhang | 1013 mm (39.88 in.) |
| Ride height (ground clearance) | 202 mm (7.95 in.) |
| Minimum turning circle | 11.8 m (38.71 ft.) |
| Approach angle | 26° |
| Departure angle | 26° |
| Climb angle | 38.7° |
| Wading depth | 500 mm (19.69 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission G-TRONIC PLUS |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 350×33 mm |
| Rear brakes | Ventilated discs, 330×23 mm |
| Tires size | 255/55 R18; 255/50 R19; 265/45 R20; 265/40 R21 |
| Wheel rims size | 8J x 18; 8.5J x 19; 9J x 20; 9J x 21 |
INTRODUCTION
The Mercedes-Benz GLE 350 V6 (W166) debuted in 2015 as part of the redesigned GLE series, replacing the previous ML-Class. Built on the M-Class platform (internally known as 1HX0), the GLE aimed to offer a more refined and technologically advanced experience. The GLE 350 V6 served as a mainstream offering, providing a balance of performance, luxury, and fuel efficiency. It was positioned above the base GLE 350 models (often four-cylinder turbocharged variants in some markets) and below the higher-performance GLE 450 AMG Sport and full AMG models.
Powertrain & Engine Architecture
At the heart of the GLE 350 V6 lies the M 276.955 3.5-liter naturally aspirated V6 engine. This engine is a key member of Mercedes-Benz’s modular engine family, known for its smooth operation and reliability. It features a 60-degree V-angle, a cast aluminum engine block, and cylinder heads. The engine utilizes direct fuel injection, delivering fuel directly into the combustion chamber for improved efficiency and power. The valvetrain employs dual overhead camshafts (DOHC) with four valves per cylinder, optimizing airflow for enhanced performance. The engine produces 302 horsepower at 6500 rpm and 273 lb-ft of torque between 3500 and 5250 rpm.
Power is transmitted to the rear wheels via Mercedes-Benz’s 7G-TRONIC PLUS seven-speed automatic transmission. This transmission is renowned for its smooth and responsive shifts. It features a torque converter lock-up clutch to improve fuel efficiency at cruising speeds. The 7G-TRONIC PLUS also incorporates adaptive shift programs that adjust shift points based on driving style and road conditions. While all-wheel drive (4MATIC) was a popular option, the base GLE 350 V6 was rear-wheel drive.
Driving Characteristics
The GLE 350 V6 offers a comfortable and composed driving experience. The naturally aspirated V6 provides linear power delivery, making it easy to modulate throttle response. While not as quick as the turbocharged or AMG variants, the GLE 350 V6 still delivers respectable acceleration, achieving 0-60 mph in around 7.5 seconds. The 7G-TRONIC PLUS transmission contributes to a smooth and refined driving experience, with well-spaced gear ratios. The rear-wheel-drive configuration provides a balanced feel, although it may lack the all-weather capability of the 4MATIC models. The suspension is tuned for comfort, absorbing bumps and imperfections in the road effectively.
Equipment & Trim Levels
The GLE 350 V6 came standard with a generous array of features, including synthetic leather upholstery, power-adjustable front seats, dual-zone automatic climate control, and a rearview camera. The COMAND infotainment system with a central display screen was also standard, offering navigation, audio controls, and smartphone integration. Optional extras included genuine leather upholstery, a panoramic sunroof, a premium sound system, and a suite of advanced safety features such as blind-spot monitoring, lane-keeping assist, and adaptive cruise control. Trim levels varied slightly depending on the market, but generally included options for adding wood trim, metallic accents, and upgraded interior materials.
Chassis & Braking
The W166 GLE platform utilizes a robust chassis with a fully independent suspension. The front suspension features coil springs, double wishbones, and a transverse stabilizer bar. The rear suspension employs an independent multi-link setup with a stabilizer bar. This configuration provides a comfortable ride and good handling characteristics. The GLE 350 V6 typically came equipped with ventilated disc brakes on all four wheels. Front brakes measured 350x33mm, while rear brakes were 330x23mm. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard safety features.
Market Reception & Comparison
The GLE 350 V6 was generally well-received by automotive critics. It was praised for its comfortable ride, refined interior, and smooth powertrain. However, some reviewers noted that the naturally aspirated V6 engine lacked the punch of the turbocharged alternatives. Fuel economy was considered average for its class, with combined ratings around 19.9 US mpg. Compared to the GLE 450 AMG Sport, the GLE 350 V6 offered a more comfortable ride and a lower price point, but sacrificed some performance. The diesel-powered GLE 350 d (available in Europe) provided superior fuel economy but lacked the refinement of the gasoline V6.
Legacy
The Mercedes-Benz GLE 350 V6 (W166) has proven to be a reliable and durable SUV. The M 276 V6 engine is known for its longevity, and the 7G-TRONIC PLUS transmission is generally trouble-free. On the used car market, the GLE 350 V6 represents a good value proposition, offering a luxurious and capable SUV at a reasonable price. Regular maintenance, including oil changes and fluid checks, is crucial for ensuring long-term reliability. While the W166 generation has been replaced by the newer W167 model, the GLE 350 V6 remains a popular choice for buyers seeking a well-rounded and dependable luxury SUV.
