The Mercedes-Benz GLE 500 V8 4MATIC, produced from October 2015 to October 2018, 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 substantial refresh for the GLE, formerly known as the ML-Class, with updated styling, technology, and powertrain options. The GLE 500 V8 aimed to deliver a blend of SUV practicality, Mercedes-Benz refinement, and robust V8 performance, appealing to buyers seeking a powerful and capable luxury SUV.
| Brand | Mercedes-Benz |
| Model | GLE |
| Generation | GLE SUV (W166) |
| Type | GLE 500 V8 (455 Hp) 4MATIC 9G-TRONIC |
| Start of production | October, 2015 |
| End of production | October, 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 14-14.4 l/100 km (16.8 – 16.3 US mpg) |
| Fuel consumption (extra urban) | 8.3-8.5 l/100 km (28.3 – 27.7 US mpg) |
| Fuel consumption (combined) | 10.4-10.6 l/100 km (22.6 – 22.2 US mpg) |
| CO2 emissions | 243-249 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.1 sec |
| Acceleration 0 – 62 mph | 5.1 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4.8 kg/Hp |
| Weight-to-torque ratio | 3.1 kg/Nm |
| Power | 455 Hp |
| 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.) |
| 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 | 2170 kg (4784.03 lbs.) |
| Max. weight | 2950 kg (6503.64 lbs.) |
| Max load | 780 kg (1719.61 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 | 1758-2148 mm (69.21 – 84.57 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.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears | 9 |
| Type of gearbox | automatic transmission G-TRONIC |
Powertrain & Engine Architecture
The heart of the GLE 500 V8 is the M278.928 4.7-liter V8 engine. This engine utilizes direct fuel injection and is equipped with twin turbochargers, resulting in a potent 455 horsepower and 516 lb-ft of torque. The engine’s architecture features a 90-degree V-angle, contributing to a smoother power delivery and reduced vibrations. The M278 engine family is known for its robust construction and ability to handle significant power. The engine is longitudinally mounted in the engine bay, driving all four wheels through the 4MATIC all-wheel-drive system. Paired with the engine is the 9G-TRONIC nine-speed automatic transmission. This transmission is designed for both efficiency and performance, offering quick and smooth gear changes. The 9G-TRONIC allows the engine to operate in its optimal power band more frequently, improving both acceleration and fuel economy. The transmission also features paddle shifters for manual control, allowing drivers to select gears as desired.
Driving Characteristics
The GLE 500 V8 delivers a noticeably different driving experience compared to the lower-trim GLE models. The substantial torque output, available from as low as 1800 rpm, provides effortless acceleration in virtually any situation. The 0-60 mph time of around 4.8 seconds is impressive for a large SUV. The 9G-TRONIC transmission contributes to a refined driving experience, with seamless gear changes and a wide range of ratios. While the GLE 500 V8 isn’t a dedicated sports SUV, it offers a confident and engaging driving experience. The air suspension, standard on this model, provides a comfortable ride while also allowing for adjustable ride height for off-road situations. Compared to the GLE 350 or 400, the V8 offers a more authoritative and responsive feel, particularly during overtaking maneuvers or when towing.
Equipment & Trim Levels
The GLE 500 V8 came generously equipped as standard. Key features included leather upholstery, heated and ventilated front seats, a panoramic sunroof, and a premium sound system. The infotainment system featured a large central display screen with Mercedes-Benz’s COMAND interface. Standard safety features included automatic emergency braking, lane-keeping assist, and blind-spot monitoring. Optional extras included features like massaging seats, a rear-seat entertainment system, and advanced driver-assistance packages. The interior trim options typically included wood or aluminum accents, allowing buyers to personalize the cabin to their preferences. The GLE 500 V8 was positioned as a luxury offering, and the interior reflected that with high-quality materials and meticulous attention to detail.
Chassis & Braking
The W166 GLE 500 V8 utilizes a double-wishbone front suspension and an independent multi-link rear suspension. Air suspension was standard, providing adjustable ride height and improved comfort. This system allowed drivers to raise the vehicle for off-road use or lower it for improved aerodynamics at highway speeds. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. The GLE 500 V8 also features ABS (Anti-lock Braking System) and electronic stability control as standard equipment. The suspension tuning is geared towards providing a balance between comfort and handling, with a focus on minimizing body roll during cornering.
Market Reception & Comparison
The GLE 500 V8 was generally well-received by automotive critics. Reviewers praised its powerful engine, smooth transmission, and luxurious interior. However, some noted that the fuel economy was relatively poor, as expected for a V8-powered SUV. Compared to competitors like the BMW X5 and Porsche Cayenne, the GLE 500 V8 offered a compelling combination of performance, luxury, and value. The GLE 500 V8’s fuel economy figures of around 22.6 mpg combined were lower than those of the six-cylinder GLE models, but the performance difference was significant. Reliability reports suggest that the M278 engine is generally reliable, but regular maintenance is crucial to prevent potential issues.
Legacy
The GLE 500 V8 (W166) represents a capable and luxurious SUV from Mercedes-Benz. While newer models have since been introduced, the W166 generation remains a popular choice in the used car market. The M278 V8 engine is known for its durability and potential for long-term reliability, provided it receives regular maintenance. The 9G-TRONIC transmission has also proven to be a reliable unit. Today, the GLE 500 V8 offers a compelling value proposition for buyers seeking a powerful and well-equipped luxury SUV at a more affordable price point than newer models. Its blend of performance, comfort, and technology continues to make it a desirable vehicle for enthusiasts and families alike.
