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Mercedes-Benz GLS-Class X166 Crossover (2015-2019)

Neoscore 88%

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Product Overview

Mercedes-Benz GLS-Class X166 is the facelifted version of the X166 GL-Class full-size crossover in production from 2015 to 2019. It was available with a range of V6 and V8 engines that displaced 3.0 to 5.5 liters.
Compared to the pre-facelift, the GLS introduced the M276 bi-turbo V6 in the form of GLS400. In other regards, the same engines were kept, sometimes with a small power bump. Another difference is the introduction of 9-speed 9G-Tronic automatic transmission on the non-AMG models. While it has arguably too many gears and the vehicle hunts gears a lot, this unit has proven to be more reliable than the 7G-Tronic.

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Ratings

What we found**

Neoscore: 88% (not directly comparable across industries)
Pros
  • Good drivetrain reliability
  • High cargo capacity
  • Good towing capacity
  • High grade of finish
Cons
  • Non-AMG looks less good

Find Related Products (incl. referral links)*

Specifications

Variants:
GLS 350d
GLS 400
GLS 500
GLS 63 AMG

Capacity

Cargo Capacity
680 L / 24.0 cu-ft ~ 2300 L / 81.2 cu-ft
GLS 63 AMGCoolant Capacity
7.5 L / 7.9 qt
GLS 350dCoolant Capacity
10.5 L / 11.1 qt
GLS 400Coolant Capacity
10.5 L / 11.1 qt
GLS 500Coolant Capacity
12.9 L / 13.6 qt
GLS 63 AMGEngine Oil Capacity
8.5 L / 9.0 qt
GLS 350dEngine Oil Capacity
8.0 L / 8.5 qt
GLS 400Engine Oil Capacity
7.0 L / 7.4 qt
GLS 500Engine Oil Capacity
8.5 L / 9.0 qt
Fuel Capacity
100.0 L / 26.4 gal
Passengers
5
GLS 63 AMGPayload
785 kg / 1731 lbs
GLS 350dPayload
870 kg / 1918 lbs
GLS 400Payload
890 kg / 1962 lbs
GLS 500Payload
880 kg / 1940 lbs

Chassis

Brakes | Front
Ventilated discs
Brakes | Rear
Ventilated discs
Suspension | Front
Double-wishbone
Suspension | Rear
Multi-link
GLS 63 AMGTire Size
295/40 ZR 21
GLS 350dTire Size
265/60 R18
GLS 400Tire Size
265/60 R18
GLS 500Tire Size
275/55 R19
Turning Circle
12.4 m / 40.7 ft

Construction

Body Style
5-door SUV

Dimensions

Size | Height
1850 mm / 72.8 in
Size | Length
5130 mm / 202.0 in
Size | Width
1934 mm / 76.1 in | 2141 mm / 84.3 in (mirror unfolded)
Track Width | Front
1655.0 mm / 65.2 in
Track Width | Rear
1675.0 mm / 65.9 in
GLS 63 AMGWeight
2505.0 kg / 5522.6 lbs
GLS 350dWeight
2380.0 kg / 5247.0 lbs
GLS 400Weight
2360.0 kg / 5202.9 lbs
GLS 500Weight
2370.0 kg / 5225.0 lbs
GLS 63 AMGWheel Size
21 in
GLS 350dWheel Size
18 in
GLS 400Wheel Size
18 in
GLS 500Wheel Size
19 in
Wheelbase
3075 mm / 121.1 in

Performance

GLS 63 AMGAcceleration | 0 - 100 km/h
4.6 sec
GLS 350dAcceleration | 0 - 100 km/h
7.8 sec
GLS 400Acceleration | 0 - 100 km/h
6.6 sec
GLS 500Acceleration | 0 - 100 km/h
5.3 sec
GLS 63 AMGAcceleration | 0 - 60 mph
4.4 sec
GLS 350dAcceleration | 0 - 60 mph
7.4 sec
GLS 400Acceleration | 0 - 60 mph
6.3 sec
GLS 500Acceleration | 0 - 60 mph
5.0 sec
GLS 63 AMGCO2 Emission
288 g/km
GLS 350dCO2 Emission
199 ~ 185 g/km
GLS 400CO2 Emission
218 ~ 206 g/km
GLS 500CO2 Emission
264 ~ 255 g/km
GLS 63 AMGFuel Economy
12.3 L/100km / 19.1 MPG (combined) | 15.8 L/100km / 14.9 MPG (urban) | 10.3 L/100km / 22.8 MPG (highway)
GLS 350dFuel Economy
7.6 L/100km / 31.0 MPG (combined) | 8.2 L/100km / 28.7 MPG (urban) | 7.2 L/100km / 32.7 MPG (highway)
GLS 400Fuel Economy
9.4 L/100km / 25.0 MPG (combined) | 11.7 L/100km / 20.1 MPG (urban) | 8.0 L/100km / 29.4 MPG (highway)
GLS 500Fuel Economy
11.3 L/100km / 20.8 MPG (combined) | 14.9 L/100km / 15.8 MPG (urban) | 9.2 L/100km / 25.6 MPG (highway)
GLS 63 AMGTop Speed
250.0 km/h / 155.3 mph
GLS 350dTop Speed
222.0 km/h / 137.9 mph
GLS 400Top Speed
240.0 km/h / 149.1 mph
GLS 500Top Speed
250.0 km/h / 155.3 mph
GLS 63 AMGTowing Capacity
750 kg / 1653 lbs (w/o brakes) | 3290 kg / 7253 lbs (w/ brakes @ 12% gradient)
GLS 350dTowing Capacity
750 kg / 1653 lbs (w/o brakes) | 3500 kg / 7716 lbs (w/ brakes @ 12% gradient)
GLS 400Towing Capacity
750 kg / 1653 lbs (w/o brakes) | 3500 kg / 7716 lbs (w/ brakes @ 12% gradient)
GLS 500Towing Capacity
750 kg / 1653 lbs (w/o brakes) | 3500 kg / 7716 lbs (w/ brakes @ 12% gradient)

Powertrain

Drivetrain Layout
Front-engine (longitudinal), All-wheel drive
Emission Standard
Euro 6
GLS 63 AMGEngine
M 157 DE 55 AL/157.982
GLS 350dEngine
OM 642.826
GLS 400Engine
M 276.821
GLS 500Engine
M 278 DE 46 AL/278.928
GLS 63 AMGEngine | Compression Ratio
10.0:1
GLS 350dEngine | Compression Ratio
15.5:1
GLS 400Engine | Compression Ratio
10.5:1
GLS 500Engine | Compression Ratio
10.5:1
GLS 63 AMGEngine | Displacement
5.5 L / 333.3 cu-in / 5461.0 cc
GLS 350dEngine | Displacement
3.0 L / 182.3 cu-in / 2987.0 cc
GLS 400Engine | Displacement
3.0 L / 182.8 cu-in / 2996.0 cc
GLS 500Engine | Displacement
4.7 L / 284.6 cu-in / 4663.0 cc
GLS 63 AMGEngine | Power
585.0 hp / 436.2 kW @ 5500 rpm
GLS 350dEngine | Power
258.0 hp / 192.4 kW @ 3400 rpm
GLS 400Engine | Power
333.0 hp / 248.3 kW @ 5250-6000 rpm
GLS 500Engine | Power
456.0 hp / 340.0 kW @ 5250-5500 rpm
GLS 63 AMGEngine | Specific Output
107.1 hp/L / 1.8 hp/cu-in
GLS 350dEngine | Specific Output
86.4 hp/L / 1.4 hp/cu-in
GLS 400Engine | Specific Output
111.1 hp/L / 1.8 hp/cu-in
GLS 500Engine | Specific Output
97.8 hp/L / 1.6 hp/cu-in
GLS 63 AMGEngine | Torque
760 Nm / 560.5 lb-ft @ 1750-5250 rpm
GLS 350dEngine | Torque
620 Nm / 457.3 lb-ft @ 1600-2400 rpm
GLS 400Engine | Torque
480 Nm / 354.0 lb-ft @ 1600-4000 rpm
GLS 500Engine | Torque
700 Nm / 516.3 lb-ft @ 1800-4000 rpm
GLS 63 AMGEngine | Type
Bi-turbocharged direct-injected petrol V8 engine
GLS 350dEngine | Type
Turbocharged commonrail diesel V6 engine
GLS 400Engine | Type
Bi-turbocharged direct-injected petrol V6 engine
GLS 500Engine | Type
Bi-turbocharged direct-injected petrol V8 engine
GLS 63 AMGTransmission | Gears
7
GLS 350dTransmission | Gears
9
GLS 400Transmission | Gears
9
GLS 500Transmission | Gears
9
GLS 63 AMGTransmission | Type
Automatic 7G-TRONIC
GLS 350dTransmission | Type
Automatic 9G-TRONIC
GLS 400Transmission | Type
Automatic 9G-TRONIC
GLS 500Transmission | Type
Automatic 9G-TRONIC

Production

Availability
2015 ~ 2019

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