2021 Mercedes-Benz GLS 450

MSRP $76,000

Ranked #10 in Fullsize Suv

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2021 Mercedes-Benz GLS 450 Price, Review, Ratings and Pictures

Updated on: July 14, 2021

Nathan Dyer's image
Nathan Dyer 

Senior Editor


Mercedes-Benz revamped the GLS 450 in 2017, and was recently redesigned in 2020 with a complete inside-out overhaul. The GLS Class comprises four trim levels- GLS 450, GLS 580, AMG GLS 63, and Maybach GLS 600. Priced at $76,000, the base GLS 450 comes powered by a turbocharged 362-horsepower inline-six engine. The engine is mated with a nine-speed automatic transmission and all-wheel drive. 

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Pros

Powerful upgraded engine

spacious three-row seating

Abundant Cargo area

Intuitive MBUX infotainment system

Cons

Laggy off-road ability

Not so responsive steering

What's New?

The 2021 Mercedes-Benz GLS 450 is carried forward from the 2020 model year


Features

vehicle bio

base price

$76000

bodystyle

dr SUV

warranty

roadside assistance

No


Pictures & Videos


Trims

Base$76,000 onwards

Colors and Styles

2021 Mercedes-Benz GLS 450 in Agate Black color
Agate Black

Vehicle images are guides only and may not reflect the model's exact specifications/features– exact specifications/features should be confirmed with the seller.

Ratings

Engine and Performace

8.0

Pricing and Features

9.0

Fuel Economy

9.0

Interior

7.0

Exterior

7.0

Safety

6.0

Competition

6.0

7.4

OVERALL RATING

Expert Review, Pricing Analysis and Buying Guide

7.4

Overall Rating


In its third generation, the GLS 450 is massively feature-loaded and brings out best-in-class performance from the mild-hybrid system-supported powertrain. The SUV comes loaded with several safety packages that enhance its attractiveness. The GLS 450 is beautifully wrapped with sophisticated Mercedes-Benz design philosophy and offers best-in-class technology and interior upgrades. The GLS 450 competes against the Lincoln NavigatorBMW X7, and Land Rover Range Rover

2021 Mercedes-Benz GLS 450 SUV front view
2021 Mercedes-Benz GLS 450 SUV rear view

9.0/10
Fuel Economy

7.0/10
Interior

7.0/10
Exterior

6.0/10
Safety

6.0/10
Competition


2021 Mercedes-Benz GLS 450 Features

Priced at $76,200, the Mercedes-Benz GLS 450 is the base trim in the GLS-Class lineup. The higher trims of the lineup get their separate reviews. The GLS 450 comes powered by a potent 362 horsepower 3.0-liter turbocharged engine that comes intact with a 48-volt EQ Boost mild-hybrid technology. This gives the luxury SUV a power boost of 21 horsepower. Mercedes-Benz has offered multiple packages with the GLS 450 that enhance safety and performance. 

Model

GLS 450 4MATIC

MSRP(CVT)

$76,200

Key Features

48-volt EQ Boost technology

 

Mercedes-Benz User Experience (MBUX)

 

Optional E-ACTIVE BODY CONTROL suspension

 

Optional Burmester High-End 3D Surround Sound System

 

Premium Nappa leather upholstery

 

Driver Assistance Package with new Active Stop-and-Go Assist feature

 

Apple CarPlay and Android Auto

 

4-zone climate control, upgradable to 5-zone

 

Optional Air Balance cabin fragrance system

 

Inductive wireless charging

 

64-color ambient lighting

Which trim should you buy?

The 2021 Mercedes GLS 450 stands as a standalone option, however, it can be coupled with several packages that make it a prominent luxury SUV. We expect you to add the Driver Assistance Package Plus that offers adaptive cruise control along with other important driver aids. You can think about adding the "Mercedes-Benz Premier Service" package as well. 

2021 Mercedes-Benz GLS 450 Engine and Performance

The 2021 Mercedes-Benz GLS 450 comes with a familiar 3.0-liter turbocharged 6-cylinder inline engine coupled with a 48-volt onboard electrical system. The mild-hybrid assist, also called the EQ Boost, helps in bringing up the power by 21 horses and torque by 184 lb-ft. The standard power output of the GLS 450 is 362 horsepower along with 369 lb-ft of torque. The transmission duty is carried out by a 9-speed automatic gearbox. The SUV comes standard with an all-wheel drive. The mild-hybrid system ensures smooth power delivery along with effective transmission.

2021 Mercedes-Benz GLS 450 SUV ride and handling

Models

2021 Mercedes-Benz GLS 450

2021 BMW X7

2021 Land Rover Range Rover

2021 Lincoln Navigator

MSRP

$76,200

$75,000

$92,000

$76,185

Engine

3.0 L Turbo Inline-6 

3.0 L Turbo Inline-6

3.0L turbocharged inline-6

3.5L twin-turbo V6

Drivetrain

AWD

AWD

4WD

AWD

Transmission

9-speed automatic

8-speed automatic

8-speed automatic

10-speed automatic

Power

362 hp @ 5,500 RPM

335 hp @ 5,500 RPM

355 hp @ 5,500 RPM

450 hp @ 5,500 RPM

Torque

369 lb-ft @ 1600 RPM

330 lb-ft @ 1500 RPM

365 lb-ft @ 2,000 RPM

510 lb-ft @ 4,500 RPM

0-60 MPH

5.9 sec

5.8 sec

7.0 secs

5.9 secs

Quarter Mile

N/A

N/A

13.9 secs

14.5 secs

Top Speed

130 MPH

155 MPH

N/A

150 MPH

The acceleration offered by the GLS 450 SUV is at 5.9 seconds, and it is similar to what the biggies Navigator offers. The Range Rover is capable of sprinting 0 to 60 mph in 7 seconds, which is way longer than the GLS 450. With the similarly capable engine, the BMW X7 beats the GLS 450 with a minor 0.1 seconds in the 0 to 60 mph sprint. Also, the X7 offers a top speed of 155 MPH, while the GLA 45’s top speed is limited to 130 MPH.

How well does the 2021 Mercedes-Benz GLS 450 handle?

The twin-turbocharged engine powering the GLS 450 is efficient and powerful. Mercedes-Benz has done a tremendous job in improving the driving dynamics of the SUV. The available standard air suspension setup and adaptive damping system allow the SUV to offer optimum comfort to the passengers while traveling through an uneven path. 

Having a heavy curb weight is something most SUVs find hard to deal with. But, this is still not the scenario with the GLS 450. Cornering is handled effectively with Curve driving mode, and the GLS 450 can be seen cutting nicely around corners. It is one of the most agile SUVs to drive across various terrain.

2021 Mercedes-Benz GLS 450 Braking Performance

With decent brake rotors in front and rear, the GLS 450 brings out great braking performance compared to its rivals. The SUV manages to stop at a distance of 110 feet, which is less than the big Navigator. Also, with a curb weight of 5,412, the GLS 450 remains stable while braking and doesn’t cause any sort of discomfort to the driver or passengers. 

Models

2021 Mercedes-Benz GLS 450

2021 BMW X7

2021 Land Rover Range Rover

2021 Lincoln Navigator

Brake Rotors: Front (inches)

14.8

N/A

14.3

N/A

Brake Rotors: Rear (inches)

13.6

N/A

13.3

N/A

Curb Weight (lbs)

5,412

5,922

4,955

5,855

60-0 (feet)

110

105

N/A

125

The GLS 450 gets some additional safety aids like ABS and Brake Assist that ease the use of brakes. However, the BMW X7 gets an array of safety features, and even with a heavy 5,922 curb weight, the SUV stops at a distance of 105 feet. The Land Rover Range Rover is the lightest option in the competition, thus we can expect decent braking performance from it.

2021 Mercedes-Benz GLS 450 Fuel Economy

9.0/10

The GLS 450 offers a decent fuel economy concerning its power offering. The mild-hybrid system works amazingly in returning 19 mpg in the city and 23 mpg on the highway. Since there are no mechanical changes for this year, we expect a similar EPA-rated fuel economy of the Mercedes-Benz GLA 450. The SUV comes with a fuel tank capacity of 23.8 gallons, which results in a range of 452 miles in the city, 547 miles on the highway, and 500 miles combined.

Models

2021 Mercedes-Benz GLS 450

2021 BMW X7

2021 Land Rover Range Rover

2021 Lincoln Navigator

MPG (City)

19

20

18

16

MPG (Highway)

23

25

23

21

MPG (Combined)

21

22

20

18

Fuel Capacity (Gallons)

23.8 gallons

21.9 gallons

27.5

23.2

Range (City/Hwy/Combined) (mi)

452/547/500 miles

438/548/481 miles

495.0/632.5/550.0

371.2/487.2/417.6

When compared with the competition, offering a fuel tank capacity of 27.5 gallons, the Range Rover offers a maximum driving range of 495 miles in the city and 632.5 miles on the highway. Despite having a tank capacity of 23.2 gallons, the Lincoln Navigator offers poor range, thanks to its worst in class economy figures of 16 mpg in the city, 21 mpg on the highway, and 18 mpg combined.

2021 Mercedes-Benz GLS 450 Interior

7.0/10

The GLS 450 received a much-awaited overhaul last year. There are hardly any visible changes in the 2021 GLS 450 interior. The premium-looking interior is dominated by an LCD touchscreen installed on the dashboard. The overall finish of the cabin is best in class and reflects the traditional Mercedes-Benz cabin vibe. Everything you touch inside the GLS 450 is covered with some sort of soft-touch material that feels premium. In most places, the German carmaker has used dual-tone leather, wooden inserts, and clean metal

2021 Mercedes-Benz GLS 450 SUV cockpit area

Models

2021 Mercedes-Benz GLS 450

2021 BMW X7

2021 Land Rover Range Rover

2021 Lincoln Navigator

Seating Capacity

7/6

7

5

8

Front Row (Head/Shoulder/Leg) (in)

39.4/59.3/40.3

41.9/60/39.8

39.8/60.7/42.5

41.8/65.2/43.9

Second Row (Head/Shoulder/Leg) (in)

40.2/58.5/41.9

39.9/58.1/37.6

39.2/59.4/40.2

40.0/65.1/41.1

Third Row (Head/Shoulder/Leg) (in)

38.9/50.3/34.6

36.6/47.9/33.3

NA

37.3/64.2/41.1

Cargo Capacity (ft3)

 

 

31.7

19.3

There's a standard seating capacity for seven people. If you get second-row captain seats, there will be a seating capacity for six only. The seats are comfortable and covered with Nappa leather upholstery. You can also get optional seats with a massage facility. The rear seats can also accommodate tall passengers with an adequate amount of legroom and headroom. Coupled with a Rear Seat Package Plus, the GLS 450 adds features like wireless charging, heated and ventilated seats, cooled cup holders, headrests, a 7-inch touchscreen, and a foldable center console. Some of the notable interior features are:

  • Heated and ventilated front seats
  • 10-way power driver seat
  • Auto-Dimming Rearview Camera
  • Driver seat memory settings
  • Leather-wrapped steering wheel
  • Dual-zone Automatic Climate control

What’s there to keep you entertained?

The 2021 GLS 450 infotainment system comprises the latest Mercedes-Benz User Experience (MBUX) technology. The 12.3-inch touchscreen is intuitive and offers best-in-class contrast and user interface. The infotainment system comes integrated with Apple CarPlay and Android Auto. The touchscreen is bright and large enough to use.

2021 Mercedes-Benz GLS 450 SUV infotainment screen

Some of the notable infotainment features include:

  • 12.3-inch touch screen infotainment system
  • Android Auto and Apple CarPlay compatibility
  • Mercedes Benz user experience (MBUX)
  • Burmester surround-sound system.
  • Voice Control with Natural Language recognition
  • AM/FM/SiriusXM
  • Hands-free Bluetooth interface

2021 Mercedes-Benz GLS 450 Exterior

7.0/10

The 2021 GLS 450 is the same as seen in the 2020 model year. The SUV received a complete redesign last year and remains a carry-forward model for this year. Mercedes-Benz has offered a sophisticated design philosophy with the GLS 450. The exterior looks dynamic with an iconic tri-state logo on the center and a signature grille on the front fascia. The side looks streamlined with 20-inch wheels to make a bolder road presence. As you move towards the rear, you'll notice sleeker taillights and a conventional tailgate that looks fresh and appealing. 

2021 Mercedes-Benz GLS 450 SUV

Models

2021 Mercedes-Benz GLS 450

2021 BMW X7

2021 Land Rover Range Rover

2021 Lincoln Navigator

Curb Weight (lbs)

5412 

5370 

4,955

5,855

Length (in)

205

203.3

196.8

210.0

Width (in)

77

78.7

87.4

79.9

Height (in)

71.8

71.1

73.5

76.3

Ground Clearance (in)

NA

8.7

8.7

9.6

Wheelbase (in)

123.4

122.2

115.0

122.5

The GLS 450 has got a large wheelbase that somehow enhances its road presence and driving dynamics. Also, the longer wheelbase allows the SUV to remain stable while cruising on highways at higher speeds. When comparing the curb weight, the Lincoln Navigator is the heaviest option in the competition. Some of the notable exterior features of the GLS 450 are:

  • Adaptive LED headlights
  • LED taillights
  • 20-inch 8-spoke wheels
  • Privacy glass

2021 Mercedes-Benz GLS 450 Safety

6.0/10

The 2021 Mercedes-Benz GLS 450 or previous year model is yet to be crash-tested by the NHTSA and IIHS. The reason behind the lack of safety rating must be its premium offering and low demand among the millennials. However, the SUV offers an array of modern safety features. Some of the notable safety features included with the 2021 Mercedes-Benz GLS class are:

  • Enhanced Alarm System with Parking Damage Detection
  • Attention Assist
  • Active Parking Assist with Surround View
  • PRE-SAFE System with PRE-SAFE Sound
  • Blind Spot Assist
  • Active Brake Assist
  • LED Intelligent light system headlamps and LED taillamps
  • Optional Driver Assistance Package with Active Stop-and-Go Assist feature
  • Optional Comfort driver fatigue detection

2021 Mercedes-Benz GLS 450 Competition

6.0/10

2021 Mercedes-Benz GLS 450 vs. 2021 BMW X7 

Both the SUVs are packed with similar powertrain capacity, but the GLS 450 is installed with the latest technology that enhances the performance and power output. The BMW X7 offers sportier driving dynamics compared to the GLS 450. However, with the latest redesign, the Mercedes-Benz offers best-in-class features and interior. 

2021 BMW X7

2021 Mercedes-Benz GLS 450 vs. 2021 Land Rover Range Rover

The Land Rover Range Rover is priced heavily when compared to the GLS 450. The Mercedes-Benz offers a subtle exterior and interior design. The Range Rover is more off-road oriented compared to the GLS 450. With the latest features and MBUX infotainment, the GLS 450 boasts a superior and luxurious cabin compared to the Range Rover.

2021 Land Rover Range Rover

2021 Mercedes-Benz GLS 450 vs. 2021 Lincoln Navigator

The Lincoln Navigator has seen multiple improvements in recent times. It is backed with power-packed performance and smooth transmission. The Navigator propels a whopping 450 horsepower from its 3.5-liter twin-turbocharged V6 engine. The GLS 450 manages to offer a maximum power output of 383 horsepower when combined with the 48-volt EQ mild-hybrid technology. Compared to the Navigator, with a similar fuel tank capacity, the GLS 450 offers a better driving range. 

2021 Lincoln Navigator

 

2021 Mercedes-Benz GLS 450 Final Verdict

The 2021 Mercedes-Benz GLS 450 is one of the celebrated luxury SUVs in its segment. With the latest safety and tech packages, the GLS 450 is in high demand among luxury SUV shoppers. With the stand-out price tag, the 2021 GLS 450 is a reliable SUV to bet on. This should be on the buying chart if you are looking for a premium and spacious SUV.