The Mercedes-Benz GLE 320 4MATIC, produced between November 2016 and 2019, represents a mid-range offering within the W166 GLE SUV generation. Positioned between the entry-level GLE 300 and the performance-oriented AMG variants, the GLE 320 aimed to provide a balance of luxury, performance, and efficiency for the American market and beyond. It was a key model in Mercedes-Benz’s strategy to offer a diverse range of SUV options, catering to a broad spectrum of customer preferences. The W166 platform, introduced in 2011, underwent a significant facelift in 2015, with the GLE 320 arriving as part of this updated lineup.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (W166) |
| Type | GLE 320 V6 (272 Hp) 4MATIC 9G-TRONIC |
| Start of production | November, 2016 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (combined) | 9.3 l/100 km (25.3 US mpg, 30.4 UK mpg, 10.8 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.6 sec |
| Acceleration 0 – 62 mph | 7.6 sec |
| Acceleration 0 – 60 mph | 7.2 sec |
| Maximum speed | 230 km/h (142.92 mph) |
| Power | 272 Hp @ 5000 rpm |
| Torque | 400 Nm @ 1300-4500 rpm (295.02 lb.-ft. @ 1300-4500 rpm) |
| 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.) |
| Number of valves per cylinder | 4 |
| 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) |
| Length | 4813 mm (189.49 in.) |
| Width | 1951 mm (76.81 in.) |
| Width including mirrors | 2141 mm (84.29 in.) |
| Height | 1761-1767 mm (69.33 – 69.57 in.) |
| Wheelbase | 2915 mm (114.76 in.) |
| Front track | 1650 mm (64.96 in.) |
| Rear track | 1669 mm (65.71 in.) |
| Front overhang | 880 mm (34.65 in.) |
| Rear overhang | 1018 mm (40.08 in.) |
| Approach angle | 25-25.5° |
| Departure angle | 26.8-27.2° |
| Drivetrain Architecture | All wheel drive (4×4). Internal Combustion engine. |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 255/50 R19; 265/45 R20 |
| Wheel rims size | 8.5J x 19; 9J x 20 |
Powertrain & Engine Architecture
At the heart of the GLE 320 lies the M276.821 3.0-liter V6 engine. This engine is a significant departure from older Mercedes-Benz V6 designs, utilizing direct injection and twin-turbocharging to deliver a potent combination of power and efficiency. The direct injection system precisely meters fuel into the combustion chambers, optimizing combustion and reducing emissions. The twin-turbochargers, strategically positioned, minimize turbo lag and provide a broad torque curve. The engine’s valvetrain employs a double overhead camshaft (DOHC) design with four valves per cylinder, further enhancing its breathing and performance. The 9G-TRONIC nine-speed automatic transmission is a crucial component, offering a wide range of gear ratios to optimize fuel economy and provide smooth, responsive shifts. This transmission was a key technological advancement for Mercedes-Benz, contributing to both improved efficiency and enhanced driving dynamics.
Driving Characteristics
The GLE 320 4MATIC delivers a refined and comfortable driving experience. The 272 horsepower and 400 Nm (295 lb-ft) of torque provide ample power for everyday driving and confident highway passing. While not as overtly sporty as the AMG-tuned GLE models, the GLE 320 offers a respectable 0-60 mph time of around 7.2 seconds. The 9G-TRONIC transmission plays a vital role in this performance, seamlessly shifting through the gears to keep the engine in its optimal power band. Compared to the base GLE 300, the GLE 320 offers a noticeable increase in power and responsiveness. The 4MATIC all-wheel-drive system provides excellent traction in various weather conditions, enhancing stability and control. The suspension is tuned for comfort, absorbing bumps and imperfections in the road while maintaining a composed ride.
Equipment & Trim Levels
The GLE 320 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. Mercedes-Benz’s COMAND infotainment system, with its central display screen, provided access to navigation, entertainment, and vehicle settings. Optional extras included features like a panoramic sunroof, advanced driver-assistance systems (such as adaptive cruise control and lane-keeping assist), and upgraded interior trim options. The GLE 320 often served as a platform for various packages, allowing buyers to customize their vehicle with specific features and technologies.
Chassis & Braking
The W166 GLE platform utilizes a robust chassis with a coil spring, double wishbone suspension at the front and an independent multi-link spring suspension at the rear. A transverse stabilizer bar is fitted to both axles to reduce body roll during cornering. The GLE 320 typically featured ventilated disc brakes on all four wheels, providing ample stopping power. The anti-lock braking system (ABS) is standard, enhancing safety and control during emergency braking situations. The suspension tuning prioritizes comfort and ride quality, but still provides a reasonably controlled handling experience.
Market Reception & Comparison
The GLE 320 was generally well-received by automotive critics, who praised its blend of luxury, performance, and efficiency. It was seen as a strong contender in the mid-size luxury SUV segment, offering a compelling alternative to rivals such as the BMW X5 and Audi Q7. Fuel economy was considered respectable for its class, although not class-leading. Reliability reports have been generally positive, with the M276 engine proving to be a durable and dependable powerplant. Compared to the GLE 300, the GLE 320 offered a significant performance upgrade, justifying its higher price tag for buyers seeking more power. Compared to the higher-performance AMG variants, the GLE 320 provided a more balanced and comfortable driving experience, appealing to a broader range of customers.
Legacy
The GLE 320 4MATIC, while superseded by newer GLE generations, remains a popular choice in the used car market. The M276 engine has proven to be relatively reliable, and parts availability is generally good. The 9G-TRONIC transmission, while complex, has also demonstrated good long-term durability. The GLE 320 represents a sweet spot in the W166 lineup, offering a compelling combination of luxury, performance, and practicality at a more accessible price point than the higher-end AMG models. Its blend of features and capabilities continues to make it a desirable option for buyers seeking a well-rounded luxury SUV.
