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2018 Mercedes-Benz GLS450 review

Research, photos, specs, and expertise

Mercedes-Benz GLS450 highlights

Customer rating

RepairPal reliability rating

Mileage (EPA estimate)

17 city, 22 highway, 19 combined

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2018 Mercedes-Benz GLS450 trims

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Ratings & reliability

Customer ratings

5 out of 5

1 customer reviews

RepairPal reliability rating

3
1
2
Above Average

RepairPal gave the Mercedes-Benz GLS450 an overall reliability rating of 3.5 out of 5 stars, which RepairPal describes as Above Average. This rating ranks Mercedes-Benz GLS450 5th out of 20 among Luxury Fullsize SUVs.

View RepairPal's full rating of the Mercedes-Benz GLS450

Mercedes-Benz GLS450 features and specs

Curious how Mercedes-Benz GLS450 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities

4D Sport Utility 4WD/AWD

Standard Features

  • Power Locks
  • Power Windows
  • Sunroof(s)
  • Air Conditioning
  • Rear Defroster
  • Cruise Control
  • ABS Brakes
  • Third Row Seat
  • Power Seat(s)
  • Memory Seat(s)
  • Front Seat Heaters
  • Power Folding Third Row
  • Power Mirrors
  • Adjustable Suspension
  • Traction Control
  • Leatherette Seats
  • Side Airbags
  • Overhead Airbags
  • Rear View Camera
  • Rear Air Conditioning
  • Remote Start
  • Heated Mirrors
  • Alloy Wheels
  • Power Hatch/Deck Lid
  • Automatic Transmission
  • 4WD/AWD
  • Turbo Charged Engine
  • AM/FM Stereo
  • Auxiliary Audio Input
  • Bluetooth Technology
  • CD Audio

Optional Features

  • Panoramic Sunroof
  • Rear Air Conditioning
  • Automated Cruise Control
  • Leather Seats
  • Rear Seat Heaters
  • Seat Massagers
  • A/C Seat(s)
  • Heated Steering Wheel
  • Rear Sunshade
  • Parking Sensors
  • Automated Parking
  • Blind Spot Monitor
  • Lane Departure Warning
  • Smart Key
  • Front Seat Heaters
  • Full Roof Rack
  • Running Boards
  • 20 Inch Plus Wheels
  • Tow Hitch
  • CD Audio
  • Harman Kardon Sound
  • Navigation System
  • Rear Entertainment System
  • Satellite Radio Ready
  • Apple CarPlay
  • Bang & Olufsen Audio
  • Android Auto

Drive Wheels

All Wheel Drive (4WD/AWD)

Engine size

3.0L

Horsepower

362

Torque (ft-lbs)

369

Engine type

Turbo Gas

Fuel capacity

26.4

Wheelbase

121.1"

Overall length

202"

Width

76.1"

Height

72.8"

Leg room

F 40.3"/M 38.5"/R 35"

Head room

F 41.2"/M 40"/R 38.9"

Front tires

P275/55HR19

Rear tires

P275/55HR19

Seating capacity

7

Transmission

Automatic

2018 Mercedes-Benz GLS450 FAQ

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We hope you found this information helpful. This content is intended to inform and is not meant to indicate that a particular vehicle is currently available or recommended for you.​

Statements of fuel economy or EV range are based on EPA and other third-party estimates for vehicles when new. Fuel economy and EV range will degrade with time and vary based on age, driving conditions, vehicle history, and other conditions. See fueleconomy.gov for more info.

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