2018 Mercedes-Benz GLS550

Pros: Excellent build quality; broad range of engine choices; quiet cabin

Cons: Second and 3rd-row seats aren’t as spacious as many premium-large SUVs’; steep price premium of AMG GLS63 model

CG Says: The 2018 Mercedes-Benz GLS-Class is essentially unchanged. In 2017, Mercedes changed the name of its largest crossover SUV from GL to GLS to better sync up with the naming structure of its passenger cars. Three engines are offered. GLS450 is powered by a 362-horsepower turbocharged 3.0-liter V6. The GLS550 has a turbocharged 4.7-liter V8 with 449 hp and the high-performance AMG GLS63 has a 577-hp turbocharged 5.5-liter V8. GLS450 and GLS550 have a 9-speed automatic transmission, while AMG GLS63 has a 7-speed automatic. All-wheel drive is standard. Available safety features include autonomous emergency braking, driver-attention monitor, adaptive cruise control, adaptive headlight high beams, lane-keep assist, and blind-spot alert. Other available features include park assist, surround-view camera, panoramic sunroof, and power-folding third-row seats. The 7-passenger GLS-Class doesn’t have the sheer interior volume of some premium large SUVs, but its accommodations are more than adequate for the majority of buyers. Relatively trim exterior dimensions ease parking and maneuverability, too. Any GLS offers impressive power and high levels of refinement. Note that prices climb quickly as you add options, particularly the Designo interior packages and Bang & Olufsen audio system. The AMG GLS63 model is for high rollers only.

The Facts
Class Premium Large SUV
Body Style(s) 4-door wagon
Passenger Count 7
Drive Wheels all-wheel drive
Manufacturer Mercedes-Benz
Nation of Manufacture USA
Base Prices GLS450: $70,545
GLS550: $95,945
AMG GLS63: $126,295

Base Engine
turbocharged 3.0-liter V6 (GLS450)
Horsepower
362
Std. Transmission
9-speed automatic
Avail. Transmission
NA
EPA City Range (mpg)
17
EPA Hwy Range (mpg)
22

Optional Engine
turbocharged 4.7-liter V8 (GLS550)
Horsepower
449
Std. Transmission
9-speed autoamtic
Avail. Transmission
NA
EPA City Range (mpg)
14
EPA Hwy Range (mpg)
19

Optional Engine
turbocharged 5.5-liter V8 (GLS63)
Horsepower
577
Std. Transmission
7-speed automatic
Avail. Transmission
NA
EPA City Range (mpg)
13
EPA Hwy Range (mpg)
18

The 2017 Mercedes-AMG GLS63
2018 Mercedes-Benz AMG GLS63
NHTSA Ratings
Overall - NA
0%

(5 is the highest rating)

Front Crash - NA
0%
Side Crash - NA
0%
Rollover - NA
0%

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