2018 Mercedes-Benz GLS 450

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$69,550 — $69,550 MSRP Shop local deals
(4.9) 9 reviews
Key Specs
Our Take
Safety & Recalls
Warranty & CPO
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Key Specs

of the 2018 Mercedes‑Benz GLS 450. Base trim shown.

Our Take

From the Cars.com Vehicle Test Team

The Good

  • Third-row space and accessibility
  • Interior quality, amenities

The Bad

  • Leather upholstery not standard
  • V-8 gas mileage

Notable Features of the 2018 Mercedes-Benz GLS 450

  • New Grand Edition
  • Three-row, seven-seat SUV
  • All-wheel drive standard
  • 577-hp AMG GLS63 available

2018 Mercedes-Benz GLS 450 Overview

By Cars.com Editors
Vehicle Overview

What it is: The seven-seat GLS-Class SUV has standard all-wheel drive, three rows of seats and three available engines: two turbocharged V-8s and a turbocharged V-6. As with other Mercedes, the top-shelf version of the GLS-Class is a performance-oriented AMG edition, the AMG GLS 63. Competitors include the Audi Q7, Cadillac Escalade, Infiniti QX80 and Lexus LX 570.

New for 2018

Available for the GLS 450 and GLS 550, a new Grand Edition includes diamond-quilted Nappa leather upholstery, a Nappa leather dashboard, open-pore brown ash trim, ambient lighting and brown velour floormats. Exterior Grand Edition cues include special badges and two-tone wheels – 20 inches on the GLS 450 and 21 inches on the GLS 550.

The AMG GLS 63 packs big power into a big SUV: 577 horsepower from a twin-turbocharged 5.5-liter V-8 engine that works with a seven-speed automatic transmission. 

What's Special

  • All-wheel drive splits 60 percent of the SUV’s power to the rear wheels and 40 percent to the front
  • AMG air suspension
  • AMG sport exhaust system
  • Widened fenders to fit 21-inch wheels

Latest 2018 GLS 450 Stories

Consumer Reviews

Exterior Styling
Interior Design
Value For The Money

What Drivers Are Saying


It is a very nice car

by Poolwater from Charlotte on June 6, 2018

This car was very comfortable there was plenty of leg room and I really enjoyed the smooth ride and space for all the grands and their friends Read full review


Quite a great car

by ttandanpolie from PICKERINTON, OHIO on May 10, 2018

This is a great car for my professional activities. It met all the requirements for commuting and for transporting my family. I have had no problems so far. Read full review

Safety & Recalls


The 2018 Mercedes-Benz GLS 450 currently has 1 recall

Crash and Rollover Test Ratings

The 2018 Mercedes-Benz GLS 450 has not been tested.

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All Model Years for the Mercedes-Benz GLS 450

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Cars.com Car Seat Check

Certified child passenger safety technicians conduct hands-on tests of a car’s Latch system and check the vehicle’s ability to accommodate different types of car seats. The GLS 450 received the following grades on a scale of A-F.*
* This score may not apply to all trims, especially for vehicles with multiple body styles that affect the space and design of the seating.

Warranty FAQs

What is a Bumper-to-Bumper warranty?

Often called a basic warranty or new-vehicle warranty, a bumper-to-bumper policy covers components like air conditioning, audio systems, vehicle sensors, fuel systems and major electrical components. Most policies exclude regular maintenance like fluid top offs and oil changes, but a few brands have separate free-maintenance provisions, and those that do offer them is slowly rising. Bumper-to-bumper warranties typically expire faster than powertrain warranties.

What is a Powertrain warranty?

Don't be misled a 10-year or 100,000-mile powertrain warranty doesn't promise a decade of free repairs for your car. It typically covers just the engine and transmission, along with any other moving parts that lead to the wheels, like the driveshaft and constant velocity joints. Some automakers also bundle seat belts and airbags into their powertrain warranties. With a few exceptions, powertrain warranties don't cover regular maintenance like engine tuneups and tire rotations.

What is included in Roadside Assistance?

Some automakers include roadside assistance with their bumper-to-bumper or powertrain warranties, while others have separate policies. These programs cover anything from flat-tire changes and locksmith services to jump-starts and towing. Few reimburse incidental costs like motel rooms (if you have to wait for repairs).

What other services could be included in a warranty?

Some automakers include free scheduled maintenance for items such as oil changes, air filters and tire rotations. Some include consumables including brake pads and windshield wipers; others do not. They are typically for the first couple of years of ownership of a new car.

What does CPO mean?

A certified pre-owned or CPO car has been inspected to meet minimum quality standards and typically includes some type of warranty. While dealers and third parties certify cars, the gold standard is an automaker-certified vehicle that provides a factory-backed warranty, often extending the original coverage. Vehicles must be in excellent condition and have low miles and wear to be certified, which is why off-lease vehicles feed many CPO programs.

See also the latest CPO incentives by automaker