The 2021 Mercedes-benz Gls-class stands as a paragon of luxury and spaciousness in the SUV market. This three-row behemoth isn’t just about size; it’s about delivering an unparalleled experience in comfort, technology, and performance. For families and individuals who demand the best, the GLS-Class presents a compelling package. Having undergone a significant redesign the previous year, the 2021 model elevates the standards of luxury SUVs, earning high praise and a top ranking in its class. The introduction of the high-performance AMG GLS 63 model further broadens its appeal, proving that Mercedes-Benz understands the diverse desires of its discerning clientele. While the market boasts numerous luxury three-row SUVs, few can rival the GLS-Class’s blend of opulence and capability, especially when you consider the availability of a staggering 600 horsepower in the AMG variant.
Driving a 2021 Mercedes-Benz GLS-Class isn’t just about getting from point A to point B; it’s about enjoying every mile in between. Let’s delve into what makes this luxury SUV a top contender.
Edmunds Expert Rating: A Benchmark of Excellence
8.6/10 – Great
The Edmunds Vehicle Testing Team, renowned for their rigorous and objective assessments, has awarded the 2021 Mercedes-Benz GLS-Class an impressive 8.6 out of 10. This rating isn’t just a number; it’s a testament to the GLS-Class’s superior combination of comfort, performance, and cutting-edge technology. It takes the admired qualities of the top-rated GLE SUV and amplifies them in a larger, more powerful form. The GLS-Class isn’t just another luxury SUV; it’s arguably one of the most well-rounded vehicles available today, setting a high bar for its competitors. This rating comes from a comprehensive evaluation covering over 30 aspects of the automotive experience, ensuring a holistic and reliable verdict for potential buyers.
Performance: Surprisingly Agile for Its Size
8.5/10
The performance of the 2021 Mercedes-Benz GLS-Class defies expectations for a vehicle of its size. The GLS 450, equipped with its base engine, achieves a 0-60 mph sprint in just 6.2 seconds. This figure is not just adequate; it’s genuinely quick for a luxury SUV of this stature. The power delivery is consistently strong and smooth, thanks in part to the mild hybrid system that enhances both performance and efficiency. While the transmission occasionally exhibits minor hiccups, this is a minor blemish on an otherwise stellar performance profile.
Braking is equally impressive. Stops from 60 mph are achieved in a mere 105 feet, a distance typically associated with performance cars, not large SUVs. This exceptional braking performance is partly attributed to the no-cost summer tires equipped on the test vehicle, which also contribute to substantial lateral grip. Maneuvering the GLS-Class is surprisingly easy. The light steering makes parking and navigating through traffic feel less cumbersome than expected for such a large vehicle. Overall, the GLS-Class drives with an agility and responsiveness that belies its size, offering a driving experience that is both confident and enjoyable.
Comfort: Redefining Luxury in Every Row
8.5/10
Mercedes-Benz has truly excelled in delivering unparalleled comfort in the 2021 GLS-Class. The seats are not just supportive; they are exceptionally adjustable, ensuring optimal comfort for drivers and passengers of all sizes. Optional massage features further enhance the experience, making long journeys a pleasure rather than a chore. Heated and ventilated seats perform efficiently, and the automatic climate control swiftly and effectively regulates cabin temperature, maintaining a comfortable environment regardless of external conditions.
Noise isolation is another strong suit of the GLS-Class. External noises are effectively muted, with only minimal road noise intruding on rough surfaces. The optional E-Active Body Control suspension elevates ride quality to new heights. It adeptly smooths out road imperfections, providing a composed and refined ride without excessive floating or wallowing. Despite the trend of large wheels often compromising ride comfort in SUVs, the GLS-Class test vehicle, equipped with optional 21-inch wheels, maintained exceptional ride quality, showcasing the sophisticated engineering at play.
Interior: A Sanctuary of Space and Sophistication
9/10
The interior of the 2021 Mercedes-Benz GLS-Class is a masterclass in luxury and thoughtful design. The driving position is commanding yet comfortable, providing a sense of security and control. Space is abundant in all three rows, with ample room to comfortably accommodate adults, even in the third row. Access to the third row is designed for ease, making it practical for everyday use. Large windows enhance visibility and create an airy, less claustrophobic environment for rear passengers.
While the controls are generally well-placed and within reach, the sheer number of them and the small text can require a learning curve. Developing muscle memory is necessary to operate controls without taking your eyes off the road. The separation of seat controls between the door and the infotainment system is a minor ergonomic quirk that some may find slightly inconvenient. However, these minor points do little to detract from the overall luxurious and well-appointed interior.
Technology: Setting the Gold Standard
9.5/10
In the realm of automotive technology, the 2021 Mercedes-Benz GLS-Class is a leader. The MBUX infotainment system is a standout feature, setting a benchmark for the class, despite a potentially steep initial learning curve. The navigation system is particularly impressive, featuring augmented reality overlays and turn-by-turn directions displayed in both the instrument cluster and the head-up display. These features offer compelling reasons to rely on the integrated system rather than smartphone apps. However, for those who prefer smartphone integration, Apple CarPlay and Android Auto are standard.
Connectivity is thoroughly modern, with USB-C ports available in all three rows and a standard wireless charging pad conveniently located in front of the cupholders. The driver aids are equally advanced, with adaptive cruise control that ranks among the best tested. In traffic, the system maintains a sensible following distance and can bring the GLS-Class to a complete stop and resume motion as traffic flows, enhancing both convenience and safety.
Storage: Practicality Meets Luxury
8/10
The 2021 Mercedes-Benz GLS-Class offers substantial cargo space, providing up to 84.7 cubic feet with the rear seats folded down. With all seats upright, the cargo area reduces to 17.4 cubic feet, which, while not insignificant, may not be sufficient for luggage for all passengers on a full trip. While the cargo space is commendable for the class, it falls short of the cavernous Lincoln Navigator, which offers a class-leading 103.3 cubic feet behind the front seats.
The second and third-row seats fold flat and can be easily operated via buttons in the hatch, adding convenience to cargo management. Small-item storage is excellent throughout the cabin, with numerous pockets, bins, and cupholders readily available. For those needing to tow, the GLS 450 boasts a towing capacity of 7,700 pounds, surpassing its primary competitor, the BMW X7. However, the Lincoln Navigator again leads in towing capacity, rated at 8,300 pounds.
Fuel Economy: Efficient for Its Class
8/10
The 2021 Mercedes-Benz GLS-Class demonstrates impressive fuel economy for a vehicle of its size and capabilities. EPA estimates rate it at 21 mpg combined (19 city/23 highway). Real-world testing validates these figures, with the GLS-Class matching the 21 mpg combined rating on evaluation loops. Over extended driving distances, including mixed traffic conditions and with passengers and cargo, it returned 19 mpg. These figures are commendable, highlighting the efficiency of the GLS-Class, especially considering its size and performance.
Value: Justifying the Premium Price
8/10
The 2021 Mercedes-Benz GLS-Class is undeniably a significant investment. However, its price point is justified by its exceptional build quality and comprehensive suite of features. While option packages can quickly escalate the price, this is a common trait among luxury SUVs. Compared to its competitors, the GLS-Class delivers a well-rounded and richly appointed package that arguably offers superior value. The four-year/50,000-mile bumper-to-bumper warranty is standard for the luxury class, providing peace of mind for buyers. For those seeking the pinnacle of luxury and performance in a large SUV, the GLS-Class represents a compelling value proposition.
Wildcard: The Undeniable Mercedes-Benz Appeal
8.5/10
The 2021 Mercedes-Benz GLS-Class embodies everything one expects from the prestigious Mercedes-Benz marque. Its design is clean and understated, exuding a timeless elegance. It is packed with the latest and most advanced technology, seamlessly integrated to enhance the driving and passenger experience. Luxury vehicles, by definition, should offer effortless operation, and the GLS-Class’s engine delivers smooth, potent power that is readily available. The engine note is also pleasing, particularly under full acceleration, adding an auditory dimension to the driving pleasure. The GLS-Class is remarkably easy to drive and, simply put, a genuinely pleasant environment to spend time in, whether for short commutes or long road trips.
Edmunds Recommendation: GLS 450 – The Sweet Spot
For most buyers, Edmunds recommends the GLS 450. Its six-cylinder engine provides ample power while offering better fuel efficiency compared to the V8 models. Crucially, it is generally equipped with the same array of standard and optional features as the higher trims. The primary rationale for considering the V8-powered GLS 580 or the high-performance AMG GLS 63 would be for those with significant towing needs or a desire for ultimate performance. Regardless of the trim chosen, opting for the Driver Assistance Package Plus is highly recommended. This package adds essential safety and convenience features, including adaptive cruise control, enhancing the overall driving experience and safety.
2021 Mercedes-Benz GLS-Class Models: Trim Breakdown
The 2021 Mercedes-Benz GLS-Class lineup includes three main models: GLS 450, GLS 580, and AMG GLS 63. Each trim is generously equipped with standard features, with a wide range of options available for further customization. The primary differentiator between trims is the engine. The ultra-luxurious Maybach GLS is reviewed separately. Key feature highlights for each trim include:
GLS 450: The base trim comes with:
- Turbocharged six-cylinder engine (362 hp)
- Nine-speed automatic transmission
- All-wheel drive
- Adaptive air suspension
- Seven-passenger seating
- Sunroof
- Heated and ventilated front seats
- Adaptive LED headlights
- Customizable ambient lighting
- Four-zone climate control
- MB-Tex simulated leather upholstery
Technology highlights:
- MBUX infotainment system with dual 12.3-inch displays
- Burmester surround-sound system
- Apple CarPlay and Android Auto integration
- Wireless charging pad
- Nine USB ports
- Navigation
- Keyless entry and ignition
Standard safety and assistance features:
- Forward collision mitigation
- Blind-spot monitoring
- 360-degree camera system
- Automated parking system
GLS 580: Upgrades with:
- Twin-turbo V8 engine (483 hp)
- Five-zone climate control
- Leather upholstery
- Upgraded multi-contour front seats with massage
AMG GLS 63: Performance-focused, featuring:
- More powerful twin-turbo V8 (603 hp)
- High-performance brakes
- Sport suspension
- AMG sport seats with badging
- Heated and cooled front cupholders
Optional packages and features to consider:
- Driver Assistance Package Plus: Adaptive cruise control, lane keeping assist, evasive steering assist, speed limit assist.
- E-Active Body Control: Advanced suspension (GLS 580 only).
- Second-row captain’s chairs (six-passenger configuration).
- Executive Rear Seat package (upgraded second-row seating).
- Rapid-heating front seats with heated armrests and door panels.
- Head-up display.
- Acoustic Comfort package (enhanced noise insulation).
- Upgraded Burmester sound system.
- Panoramic sunroof.
The 2021 Mercedes-Benz GLS-Class is more than just a luxury SUV; it’s a statement of sophistication and capability. For those who appreciate the finer things and require the space and versatility of a three-row SUV, the GLS-Class is a prime choice. And for owners who want to keep their investment looking its best, exploring professional car detailing services at cardetailinguk.com can ensure your GLS-Class always reflects its inherent luxury and prestige.
