Mercedes-Benz GLS X166 GLS 500 (456 Hp) 4MATIC G-TRONIC


Overall Rating

8.6 / 10
Safety N/A / 5
Not Rated
Engine 4.8 / 5
Value 3.8 / 5
Performance 4.5 / 5
Comfort 4.8 / 5
People\'s Opinion N/A / 5
Not Rated

Mercedes-Benz GLS:

The Mercedes-Benz GLS, formerly Mercedes-Benz GL-Class, is a full-size luxury crossover SUV produced by Mercedes-Benz since 2006. In each of its generations it is a three-row, seven-passenger vehicle positioned above the GLE. The GLS is considered the flagship of the marque's SUV lineup, although the body-on-frame G-Class is more expensive and has been in production longer....(Read more on Wikipedia)

X166 Overview:

Mercedes-Benz GLS (X166). With 700 Nm of torque, it offers ample pulling power. At around 2370 kg, it’s on the heavier side. All‑wheel drive provides excellent grip, ideal for off‑road use. Acceleration is excellent (0–100 km/h in 5.3 s). The top speed reaches 250 km/h. A sport utility vehicle offering higher ground clearance and versatile cargo space. Seating for 5 makes it ideal for daily use.

Safety Rating
Not rated
Euro NCAP Year N/A
Adult Occupant N/A
Stars N/A
Expert Note:
The Mercedes-Benz GLS (X166) was not directly tested by Euro NCAP. However, its platform sibling, the GLE (W166), achieved a 5-star rating in 2015, suggesting a high level of inherent safety.

GLS 500 (456 Hp) 4MATIC G-TRONIC Verdict:

Rating 5 stars

Performance Verdict

Offers robust performance with strong acceleration, providing ample power for all driving situations without the extreme edge of the AMG.

Fuel Economy

Fuel consumption is significant, though slightly better than the AMG, still a consideration for running costs.

Best Use Case: Luxury cruising, long family trips, drivers seeking strong petrol power with refined delivery.

Pros and Cons:

Pros:

  • • Exceptional interior luxury and build quality
  • • Spacious cabin with true seven-seat capability
  • • Smooth and comfortable ride, especially with air suspension
  • • Powerful and refined engine options across the range
  • • Strong towing capacity and off-road capability (with optional packages)

Cons:

  • • High purchase price and running costs, particularly for V8 models
  • • Large dimensions can make city driving and parking challenging
  • • Fuel economy is a significant concern for petrol variants
  • • Complex technology can lead to higher maintenance costs over time

Specifications:

General:
Brand:Mercedes-Benz
Model:GLS
Generation:X166
Modification (Engine):GLS 500 (456 Hp) 4MATIC G-TRONIC
Start of production:2015
End of production:2019
Powertrain Architecture:Internal Combustion engine
Body type:SUV
Seats:5
Doors:5
Engine:
Power:456 Hp @ 5250-5500 rpm.
Power per litre:97.8 Hp/l
Torque:700 Nm @ 1800-4000 rpm.
Engine Model/Code:M 278.928
Engine displacement:4663
Number of cylinders:8
Engine configuration:V-engine
Fuel injection system:Direct injection
Engine aspiration:BiTurbo, Intercooler
Engine oil capacity:8.5 l
Coolant:12.9 l
Engine layout:Front, Longitudinal
Compression ratio:10.5:1
Performance:
Fuel Type:Petrol (Gasoline)
Fuel consumption (economy) - urban:14.9-14.6 l/100 km
Fuel consumption (economy) - extra urban:9.2-8.8 l/100 km
Fuel consumption (economy) - combined:11.3-10.9 l/100 km
Emission standard:Euro 6
Acceleration 0 - 100 km/h:5.3 sec
Acceleration 0 - 62 mph:5.3 sec
Maximum speed:250 km/h
Weight-to-power ratio:5.2 kg/Hp, 192.4 Hp/tonne
Weight-to-torque ratio:3.4 kg/Nm, 295.4 Nm/tonne
Acceleration 0 - 60 mph:5 sec
Space:
Kerb Weight:2370
Max. weight:3250
Max. roof load:100 kg
Max load:880
Trunk (boot) space - maximum:2300 l
Trunk (boot) space - minimum:680 l
Permitted trailer load with brakes (12%):3500 kg
Fuel tank capacity:100 l
Permitted trailer load without brakes:750 kg
Size:
Length:5130 mm mm
Width:1934 mm mm
Height:1850 mm mm
Wheelbase:3075 mm mm
Width including mirrors:2141 mm
Front track:1655 mm
Rear (Back) track:1675 mm
Minimum turning circle (turning diameter):12.40 m
Powertrain:
Drive wheelAll wheel drive (4x4)
Number of gears9
Transmission typeAutomatic
Gearbox typeG-TRONIC
Front brakesVentilated discs
Rear brakesVentilated discs
Assisting systemsABS (Anti-lock braking system)
Steering typeSteering rack and pinion
Tires size275/55 R19
Wheel rims size19
Front suspensionDouble wishbone
Rear suspensionIndependent multi-link suspension

The hidden gems or the annoying flaws? Expose the truth about the Mercedes-Benz GLS!