CarGurus Header

2021 Mercedes-Benz GLC vs 2021 Mercedes-Benz GLS

2021 Mercedes-Benz GLS
2021 Mercedes-Benz GLS
$76,000MSRP
Overview
Overview
OverviewShop Now
2021 Mercedes-Benz GLC
2021 Mercedes-Benz GLC
$43,200MSRP
Overview
Overview
OverviewShop Now
2021 Mercedes-Benz GLS
$76,000MSRP
Overview
Overview
OverviewShop Now
2021 Mercedes-Benz GLC
$43,200MSRP
Overview
Overview
OverviewShop Now

Overview

MSRP

$76,000

MSRP

$43,200

Listings

13

Listings

80

Ratings & Reviews

User Reviews
User Reviews

Expert reviews

8.3 out of 10

Expert reviews

8.0 out of 10

2021 Mercedes-Benz GLS Reviews Summary

The “S” in the 2021 Mercedes-Benz GLS name is meant to connect the SUV to the S-Class flagship sedan. In this sense, the GLS is the S-Class of SUVs, and it delivers on that positioning. The 2021 GLS-Class has three rows of spacious seating, and puts comfort above all else. The GLS can hold groceries, weekend bags, antique desks purchased from a roadside consignment shop—all things that would require a lot of negotiating in the S-Class sedan.

The GLS is one member of a growing fraternity of full-size, three-row, luxury SUVs. Their ranks include the Cadillac Escalade, Lincoln Navigator, Infiniti QX80, and the more recent BMW X7. The GLS sets itself apart with a higher standard of luxury, and impressive performance… if you’re willing to shell out the cash.

2021 Mercedes-Benz GLC Reviews Summary

The modern compact luxury SUV market is an embarrassment of riches. Shoppers have more options than ever before, and all of them are terrific vehicles. There’s the BMW X3, Audi Q5, Volvo XC60, Acura RDX, Alfa Romeo Stelvio, and even the newcomer Lincoln Corsair. Not to be left out of this dizzying list is one of the segment’s most popular options, the 2021 Mercedes-Benz GLC.

While the X3 arguably kicked off the small luxury SUV craze, the bar was raised with the GLC’s predecessor, the GLK. But even the GLK felt like a stopgap compared to a fully realized vehicle like the GLC. It encapsulates everything that buyers are looking for in a compact luxury SUV—an upscale cabin, cutting-edge infotainment and safety technology, and driving dynamics that are equal parts athletic and comfortable. Many vehicles in the aforementioned list have some or all of these things, but few combine them all as elegantly as the GLC. Mercedes-Benz happily boasts the GLC is its best-seller, and with good reason. But should you count yourself among one of their customers? Read on to find out.

No video found

Popular Features & Specs

Engine

3.0L 362 hp I6

Engine

2.0L 255 hp I4

Drive Train

AWD

Drive Train

RWD

Seating Capacity

7

Seating Capacity

5

Horsepower

362 hp @ 5500 rpm

Horsepower

255 hp @ 5800 rpm

MPG City

20

MPG City

22

MPG Highway

24

MPG Highway

29
2021 Mercedes-Benz GLS
2021 Mercedes-Benz GLS
$76,000MSRP
Overview
Overview
OverviewShop Now
2021 Mercedes-Benz GLC
2021 Mercedes-Benz GLC
$43,200MSRP
Overview
Overview
OverviewShop Now
2021 Mercedes-Benz GLS
$76,000MSRP
Overview
Overview
OverviewShop Now
2021 Mercedes-Benz GLC
$43,200MSRP
Overview
Overview
OverviewShop Now

Overview

MSRP
$76,000
$43,200
Listings

Ratings & Reviews

User reviews

4.7

4.5

Expert reviews

8.3 out of 10

Read full review

8.0 out of 10

Read full review
Pros & cons
Summary

The “S” in the 2021 Mercedes-Benz GLS name is meant to connect the SUV to the S-Class flagship sedan. In this sense, the GLS is the S-Class of SUVs, and it delivers on that positioning. The 2021 GLS-Class has three rows of spacious seating, and puts comfort above all else. The GLS can hold groceries, weekend bags, antique desks purchased from a roadside consignment shop—all things that would require a lot of negotiating in the S-Class sedan.

The GLS is one member of a growing fraternity of full-size, three-row, luxury SUVs. Their ranks include the Cadillac Escalade, Lincoln Navigator, Infiniti QX80, and the more recent BMW X7. The GLS sets itself apart with a higher standard of luxury, and impressive performance… if you’re willing to shell out the cash.

The modern compact luxury SUV market is an embarrassment of riches. Shoppers have more options than ever before, and all of them are terrific vehicles. There’s the BMW X3, Audi Q5, Volvo XC60, Acura RDX, Alfa Romeo Stelvio, and even the newcomer Lincoln Corsair. Not to be left out of this dizzying list is one of the segment’s most popular options, the 2021 Mercedes-Benz GLC.

While the X3 arguably kicked off the small luxury SUV craze, the bar was raised with the GLC’s predecessor, the GLK. But even the GLK felt like a stopgap compared to a fully realized vehicle like the GLC. It encapsulates everything that buyers are looking for in a compact luxury SUV—an upscale cabin, cutting-edge infotainment and safety technology, and driving dynamics that are equal parts athletic and comfortable. Many vehicles in the aforementioned list have some or all of these things, but few combine them all as elegantly as the GLC. Mercedes-Benz happily boasts the GLC is its best-seller, and with good reason. But should you count yourself among one of their customers? Read on to find out.

Video
No video found

Popular Features & Specs

Engine
3.0L 362 hp I6
2.0L 255 hp I4
Drive Train
AWD
RWD
Seating Capacity
7
5
Horsepower
362 hp @ 5500 rpm
255 hp @ 5800 rpm
MPG City
20
22
MPG Highway
24
29
Look and feel

2021 Mercedes-Benz GLS

9/10

2021 Mercedes-Benz GLC

10/10

The 2021 Mercedes-Benz GLS, a continuation of the third generation introduced in 2020, was a luxurious full-size SUV that offered a blend of elegance and practicality. Originally launched as the GL-Class in 2006, it was designed to replace the G-Class, but the latter's popularity ensured its survival. The GLS, with its three rows of seating, provided a more comfortable and family-friendly alternative to competitors like the Navigator and Escalade. The exterior design of the GLS was more refined than its predecessors, featuring softened angles and lines that gave it a sleeker appearance. Inside, the GLS boasted a futuristic cabin with a massive digital screen dominating the dashboard, highlighting its tech-centric approach.

In contrast, the 2021 Mercedes-Benz GLC embraced a timeless aesthetic with its soft curves and rounded edges, while still maintaining a modern edge with its LED headlights. The GLC's design was reminiscent of a raised C-Class or E-Class sedan, emphasizing its car-like characteristics. The interior of the GLC was a testament to Mercedes-Benz's commitment to luxury, with a flowing dash and a floating centre touchscreen that set a high standard for compact luxury SUV cabins. The GLC was available in both conventional SUV and crossover "coupe" body styles, with the latter offering a more stylish look at the expense of cargo space.

Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Picture of 2021 Mercedes-Benz GLS
Performance

2021 Mercedes-Benz GLS

9/10

2021 Mercedes-Benz GLC

8/10

The 2021 Mercedes-Benz GLS offered a range of powerful engine options. The entry-level GLS 450 was equipped with a twin-turbocharged 3.0-litre inline-six engine, producing 362 horsepower and 369 lb-ft of torque. The GLS 580 4MATIC featured a more robust twin-turbocharged 4.0-litre V8, delivering 483 hp and 516 lb-ft. Both models utilized a nine-speed automatic transmission paired with the 4MATIC all-wheel drive system. The AMG GLS 63, with its hand-crafted 4.0-litre twin-turbo V8, generated an impressive 603 hp and 627 lb-ft of torque. This powerhouse could accelerate from 0 to 100 km/h in just 4.2 seconds, reaching a top speed of 280 km/h. The GLS 63 also featured an adaptive air suspension system, allowing for adjustable ground clearance and precise cornering.

The 2021 Mercedes-Benz GLC 300 came standard with a 2.0-litre turbocharged four-cylinder engine, producing 255 horsepower and 273 lb-ft of torque. This engine was paired with a nine-speed automatic transmission and 4MATIC all-wheel drive. The GLC offered a balanced driving experience, with precise steering and a responsive powertrain. For those seeking more power, the AMG GLC 43 featured a twin-turbocharged V6 with 385 horsepower, while the AMG GLC 63 S boasted a twin-turbo V8 producing 503 hp, offering sports car-like performance.

Form and function

2021 Mercedes-Benz GLS

8/10

2021 Mercedes-Benz GLC

7/10

The 2021 Mercedes-Benz GLS provided ample interior space with three rows of seating, accommodating up to seven passengers. The front and second-row seats offered generous headroom and legroom, while the third row was suitable for adults. The GLS excelled in cargo space, offering 355 litres behind the third row, expanding to 1,209 litres with the third row folded, and a total of 2,400 litres with both the second and third rows down. The interior featured numerous storage compartments, including spacious in-door bins and a centre console with butterfly doors.

The 2021 Mercedes-Benz GLC, in its conventional SUV form, offered 1,600 litres of cargo space with the rear seats folded, and 550 litres with them up. The GLC Coupe's cargo capacity was slightly reduced due to its fastback design, providing 1,400 litres with the seats down and 500 litres with them up. The GLC's interior was well-designed, with a decently sized centre console and deep door pockets for storage. The rear seats provided adequate legroom, although the Coupe's low roofline limited headroom.

Technology

2021 Mercedes-Benz GLS

9/10

2021 Mercedes-Benz GLC

8/10

The 2021 Mercedes-Benz GLS featured the MBUX infotainment system, which included a large touchscreen and a trackpad for navigation. The system supported Apple CarPlay and Android Auto, though a USB-C cable was required for connectivity. The MBUX system also offered advanced voice control, allowing for complex commands. The digital dash extended to the instrument panel, both controlled by touch-sensitive pads on the steering wheel, providing a customizable and tech-savvy experience.

The 2021 Mercedes-Benz GLC, equipped with the Premium Package, also featured the MBUX infotainment system with a 10.25-inch touchscreen and a touch controller. The system was intuitive, offering both touchscreen and controller options for navigation. The steering wheel included touch-sensitive pads for controlling the digital instrument panel and infotainment screen. The system supported Apple CarPlay and Android Auto, though switching between the GLC's radio and smartphone apps required navigating through menus.

Safety

2021 Mercedes-Benz GLS

9/10

2021 Mercedes-Benz GLC

8/10

The 2021 Mercedes-Benz GLS came standard with a comprehensive suite of driver-assistance features, including Active Brake Assist, rain-sensing wipers, and automatic high beams. Additional safety options included lane-change assist, adaptive cruise control, and blind spot monitoring. The GLS was equipped with a full array of airbags, traction control, and a tire-pressure monitoring system.

The 2021 Mercedes-Benz GLC offered advanced safety features through the Intelligent Drive Package, which included automatic emergency braking, forward collision warning, and blind-spot monitoring. Parking sensors and hands-free parking assist were part of the Premium Plus Package. However, the parking sensors were noted to be overly sensitive, potentially causing distractions.

CarGurus highlights

Winning Vehicle Image

According to CarGurus experts, the overall rating for the 2021 Mercedes-Benz GLS was 8.3 out of 10, while the 2021 Mercedes-Benz GLC scored 8.0 out of 10. Based on these ratings, the GLS is the recommended choice for those seeking a more spacious and powerful luxury SUV with advanced features.

Choose the 2021 Mercedes-Benz GLC if:

8of 10overall
  • You prefer a compact luxury SUV with a stylish design and car-like characteristics.
  • You value a well-crafted interior with intuitive technology features.
  • You seek a balance of performance and practicality in a smaller package.
393 results
See all

Choose the 2021 Mercedes-Benz GLS if:

8.3of 10overall
  • You need a spacious SUV with three rows of seating and ample cargo capacity.
  • You desire a powerful engine lineup, including a high-performance AMG variant.
  • You appreciate advanced technology and a luxurious interior.
70 results
See all

CarGurus highlights

Winning Vehicle Image

According to CarGurus experts, the overall rating for the 2021 Mercedes-Benz GLS was 8.3 out of 10, while the 2021 Mercedes-Benz GLC scored 8.0 out of 10. Based on these ratings, the GLS is the recommended choice for those seeking a more spacious and powerful luxury SUV with advanced features.

Choose the 2021 Mercedes-Benz GLC if:

Shop Now
8of 10overall
  • You prefer a compact luxury SUV with a stylish design and car-like characteristics.
  • You value a well-crafted interior with intuitive technology features.
  • You seek a balance of performance and practicality in a smaller package.
393 results

Choose the 2021 Mercedes-Benz GLS if:

Shop Now
8.3of 10overall
  • You need a spacious SUV with three rows of seating and ample cargo capacity.
  • You desire a powerful engine lineup, including a high-performance AMG variant.
  • You appreciate advanced technology and a luxurious interior.
70 results

CarGurus logo

By: CarGurus + AI

At CarGurus, our team of experienced automotive writers remain at the heart of our content operation, conducting hands-on car tests and writing insightful guides that are backed by years of industry experience. To complement this, we are harnessing AI to make our content offering more diverse and more helpful to shoppers than ever. To achieve this, our AI systems are based exclusively on CarGurus content, ratings and data, so that what we produce is both unique to CarGurus, and uniquely helpful to car shoppers.

Popular vehicle comparisons

2023 Mercedes-Benz GLS vs 2024 Lexus RX Hybrid2023 Toyota Sequoia vs 2023 Mercedes-Benz GLC2023 Mercedes-Benz GLC vs 2023 INFINITI QX802023 Mercedes-Benz GLS vs 2023 Lexus NX2023 Mercedes-Benz GLS vs 2024 Lexus NX2023 Mercedes-Benz GLS vs 2023 INFINITI QX802023 MINI Countryman vs 2023 Mercedes-Benz GLC2023 Mercedes-Benz GLC vs 2024 Lexus RX Hybrid2023 Mercedes-Benz GLS vs 2024 Toyota Sequoia2023 Mercedes-Benz GLC vs 2023 Lexus NX2023 Mercedes-Benz GLS vs 2024 INFINITI QX802023 MINI Countryman vs 2023 Mercedes-Benz GLS2023 Mercedes-Benz GLC vs 2023 Lexus RX Hybrid2023 Mercedes-Benz GLC vs 2024 MINI Countryman2022 Toyota Highlander Hybrid vs 2023 Mercedes-Benz GLC2022 Mercedes-Benz GLS vs 2023 MINI Countryman2022 MINI Countryman vs 2023 Mercedes-Benz GLC2022 Lexus NX vs 2023 Mercedes-Benz GLS2022 Lexus NX vs 2023 Mercedes-Benz GLC2022 Mercedes-Benz GLC vs 2022 Land Rover Range Rover Velar2022 Mercedes-Benz GLC vs 2023 Volkswagen ID.42022 Mercedes-Benz GLS vs 2023 Volkswagen ID.42022 INFINITI QX80 vs 2023 Mercedes-Benz GLC2022 Lexus RX Hybrid vs 2022 Mercedes-Benz GLS2022 Lexus RX Hybrid vs 2023 Mercedes-Benz GLS2022 Volkswagen ID.4 vs 2023 Mercedes-Benz GLC2022 Lexus RX Hybrid vs 2023 Mercedes-Benz GLC2022 Mercedes-Benz GLS vs 2023 INFINITI QX802022 Mercedes-Benz GLC vs 2023 INFINITI QX802021 Toyota Highlander Hybrid vs 2022 Mercedes-Benz GLS2021 INFINITI QX80 vs 2022 Mercedes-Benz GLC2021 Lexus RX Hybrid vs 2022 Mercedes-Benz GLC2021 Volkswagen ID.4 vs 2022 Mercedes-Benz GLS2021 Lexus RX Hybrid vs 2022 Mercedes-Benz GLS2021 Lexus NX vs 2022 Mercedes-Benz GLS2021 Toyota Sequoia vs 2022 Mercedes-Benz GLC2021 Lexus NX vs 2022 Mercedes-Benz GLC2021 Toyota Highlander Hybrid vs 2022 Mercedes-Benz GLC2021 Toyota Sequoia vs 2022 Mercedes-Benz GLS2021 INFINITI QX80 vs 2022 Mercedes-Benz GLS2020 Mercedes-Benz GLC vs 2021 Lexus NX2020 Mercedes-Benz GLS vs 2020 Lexus RX Hybrid2020 Mercedes-Benz GLS vs 2021 Lexus RX Hybrid2020 Mercedes-Benz GLS vs 2020 MINI Countryman2020 Mercedes-Benz GLS vs 2021 Toyota Sequoia2020 Mercedes-Benz GLS vs 2021 INFINITI QX802020 Mercedes-Benz GLC vs 2021 Lexus RX Hybrid2020 Mercedes-Benz GLC vs 2021 Toyota Sequoia2020 Mercedes-Benz GLC vs 2021 INFINITI QX802020 Mercedes-Benz GLS vs 2021 Volkswagen ID.42020 Mercedes-Benz GLC vs 2020 Lexus NX2020 Mercedes-Benz GLC vs 2020 Land Rover Range Rover Velar2020 Mercedes-Benz GLC vs 2020 Lexus RX Hybrid2020 Mercedes-Benz GLC vs 2021 MINI Countryman2019 MINI Countryman vs 2019 Mercedes-Benz GLC2019 Mercedes-Benz GLS vs 2020 Lexus RX Hybrid2019 Mercedes-Benz GLC vs 2020 INFINITI QX802019 Mercedes-Benz GLC vs 2020 Lexus RX Hybrid2019 INFINITI QX80 vs 2019 Mercedes-Benz GLS2019 MINI Countryman vs 2019 Mercedes-Benz GLS2019 Lexus NX vs 2019 Mercedes-Benz GLC2019 Mercedes-Benz GLC vs 2019 Lexus RX Hybrid2019 INFINITI QX80 vs 2020 Mercedes-Benz GLC2019 Lexus NX vs 2019 Mercedes-Benz GLS2019 Lexus RX Hybrid vs 2020 Mercedes-Benz GLS2019 Lexus RX Hybrid vs 2020 Mercedes-Benz GLC2019 MINI Countryman vs 2020 Mercedes-Benz GLS2019 Mercedes-Benz GLS vs 2020 MINI Countryman
CarGurus Footer