The Mercedes-Benz GLE 500 V8 4MATIC, produced from March to October 2015, represents a high-performance variant within the W166 GLE SUV generation. Positioned as a premium offering, it slotted above the GLE 350 and GLE 400 models, providing a significant step up in power and luxury. This model year marked a transition period for the GLE, bridging the gap between the outgoing ML-Class and the fully redesigned GLE that followed. The GLE 500 aimed to deliver a blend of SUV practicality, Mercedes-Benz refinement, and potent V8 performance, primarily targeting buyers in North America, Europe, and Asia who desired a luxurious and capable all-terrain vehicle.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (W166) |
| Type | GLE 500 V8 (435 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | March, 2015 |
| End of production | October, 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 14.7-15.2 l/100 km (16 – 15.5 US mpg, 19.2 – 18.6 UK mpg, 6.8 – 6.6 km/l) |
| Fuel consumption (extra urban) | 8.9-9.5 l/100 km (26.4 – 24.8 US mpg, 31.7 – 29.7 UK mpg, 11.2 – 10.5 km/l) |
| Fuel consumption (combined) | 11-11.5 l/100 km (21.4 – 20.5 US mpg, 25.7 – 24.6 UK mpg, 9.1 – 8.7 km/l) |
| CO2 emissions | 258-269 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.3 sec |
| Acceleration 0 – 62 mph | 5.3 sec |
| Acceleration 0 – 60 mph | 5 sec |
| Maximum speed | 250 km/h (155.34 mph) – Electronically limited |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5 kg/Hp, 201.4 Hp/tonne |
| Weight-to-torque ratio | 3.1 kg/Nm, 324.1 Nm/tonne |
| Power | 435 Hp @ 5250 rpm |
| Torque | 700 Nm @ 1800-4000 rpm (516.29 lb.-ft. @ 1800-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 278.928 |
| Engine displacement | 4663 cm3 (284.55 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.9 mm (3.66 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Coolant capacity | 12.9 l (13.63 US qt | 11.35 UK qt) |
| Kerb Weight | 2160 kg (4761.98 lbs.) |
| Max. weight | 2950 kg (6503.64 lbs.) |
| Max load | 790 kg (1741.65 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%) | 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 | 1758-1848 mm (69.21 – 72.76 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) | 180-285 mm (7.09 – 11.22 in.) |
| Drag coefficient (Cd) | 0.35 |
| Minimum turning circle | 11.8 m (38.71 ft.) |
| Approach angle | 23-30° |
| Departure angle | 24-29° |
| Climb angle | 45° |
| Wading depth | 600 mm (23.62 in.) |
| Drivetrain Architecture | All wheel drive (4×4). Internal Combustion engine. |
| Number of gears and type of gearbox | 7 gears, automatic transmission G-TRONIC PLUS |
| Front suspension | Double wishbone, Transverse stabilizer, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the GLE 500 V8 is the M278.928 4.7-liter twin-turbocharged V8 engine. This engine, a staple in many high-performance Mercedes-Benz vehicles of the era, utilizes direct fuel injection and a sophisticated dual-scroll turbocharger system. The twin-turbo setup, along with intercooling, helps to minimize turbo lag and deliver a broad torque curve. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing airflow for increased power output. The 7G-TRONIC PLUS seven-speed automatic transmission, known for its smooth and responsive shifts, is paired with the engine. This transmission features a torque converter lock-up clutch to improve efficiency and a wide range of gear ratios to optimize performance and fuel economy. The 4MATIC all-wheel-drive system distributes power between the front and rear axles, enhancing traction and stability in various driving conditions.
Driving Characteristics
The GLE 500 V8 delivers a markedly different driving experience compared to the lower-powered variants. The 435 horsepower and 516 lb-ft of torque provide effortless acceleration, with a 0-60 mph time of around 5 seconds. The 7G-TRONIC transmission is well-tuned to the engine’s characteristics, providing quick and seamless gear changes. While not as overtly sporty as some competitors, the GLE 500 offers a comfortable and refined ride, thanks to its air suspension system. The air suspension allows for adjustable ride height and damping, adapting to different road conditions and driving styles. The all-wheel-drive system provides confident handling in all weather conditions, making it a capable and versatile vehicle.
Equipment & Trim Levels
The GLE 500 V8 came standard with a generous array of features, reflecting its premium positioning. Standard equipment included leather upholstery, heated and ventilated front seats, a panoramic sunroof, a premium sound system, and a navigation system. Optional extras included features like massaging seats, a rear-seat entertainment system, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Interior trim options typically included wood or aluminum accents, allowing buyers to personalize the cabin to their preferences. The dashboard layout was typical of Mercedes-Benz at the time, featuring a blend of analog gauges and a central infotainment screen.
Chassis & Braking
The W166 GLE 500 V8 utilizes a double-wishbone front suspension and an independent multi-link rear suspension, both incorporating air suspension as standard. This air suspension system provides adjustable ride height and damping, enhancing both comfort and handling. The braking system consists of ventilated discs 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 GLE 500 typically featured larger stabilizer bars compared to the lower-trim models, further improving handling and reducing body roll.
Market Reception & Comparison
The GLE 500 V8 was generally well-received by automotive critics, who praised its powerful engine, comfortable ride, and luxurious interior. However, some reviewers noted that its fuel economy was relatively poor compared to some competitors. Compared to the GLE 350 and GLE 400, the GLE 500 offered a significant performance advantage but came at a higher price point. The GLE 500 also competed with other luxury SUVs such as the BMW X5, Audi Q7, and Porsche Cayenne. In terms of reliability, the M278 engine has proven to be generally robust, although preventative maintenance, particularly regarding the turbochargers and fuel system, is crucial.
Legacy
The Mercedes-Benz GLE 500 V8 (W166) remains a desirable vehicle in the used car market, particularly for buyers seeking a blend of luxury, performance, and all-weather capability. The M278 engine, while requiring regular maintenance, is known for its durability and potential for long-term reliability. The W166 generation GLE, as a whole, represents a significant step forward in Mercedes-Benz’s SUV offerings, and the 500 V8 variant stands out as a particularly capable and refined example of the breed. Its combination of power, comfort, and technology continues to appeal to enthusiasts and luxury SUV buyers alike.
