The GLS is Mercedes-Benz's full-size sport-utility vehicle (SUV) that competes in the SUV market with the BMW X7 and Cadillac Escalade. In particular, Mercedes-AMG GLS 63, sold in Korea since Jan., is called a "sports car-like full-size SUV" for combining outstanding driving performance with the GLS, which is considered the byword for a luxury full-size SUV.
From the exterior, the car exudes a strong AMG vibe. The front, with a thick vertical radiator grille symbolic of AMG models flowing into a black lower bumper, evokes the face of a shark. The hood is not especially elongated for a dynamic silhouette, but it still feels like it could roar off at any moment.
V8 lettering on the side, red brake calipers, black 22-inch wheels, and quad mufflers at the rear are other cues that signify a high-performance vehicle.
Inside, Mercedes' signature design is emphasized with AMG's own dynamic flair. Suede leather is mixed between the Nappa leather seats to add accents, and the red seat belts also stood out.
Unlike several Mercedes vehicles that use a touchscreen to operate the climate control, this car is configured with physical buttons. Physical buttons also handle vehicle height adjustment and drive mode selection. There is also a bar-style grab handle in the center console area, which gives a stable feel when getting into the driver's seat.
Matthias Geisen, Mercedes' head of sales, said in a recent interview, "We have top-tier hardware craftsmanship in interior materials and finishes," and noted, "Such sophistication must continue seamlessly in the digital domain." It signals an intent to further increase the share of physical buttons going forward.
The core element that reveals the identity of the AMG GLS 63 is its driving performance. When the engine starts, the brake and accelerator pedals rise slightly. Pressing the accelerator pedal, the speedometer climbed smoothly. Both the steering wheel and pedals felt weighty.
The process of setting off from a stop is also smooth. A belt-driven starter-generator and a 48-volt (V) electrical system provide an additional 16 kilowatts (kW) of output. This system not only recuperates energy but also assists with engine restarts, improving fuel efficiency and making restarts smoother.
Drive modes for the AMG GLS 63 are broadly divided into Comfort, Sport, and Sport Plus (+). In Comfort, it was smooth and relaxed. Switching to Sport Plus lightens the steering wheel and makes it respond the instant you turn it. In this mode, pressing the accelerator delivered a beat-late surge of power that shot the car forward. Little outside noise intruded at both low and high speeds.
The car is equipped with a 4.0-liter V8 biturbo engine. It delivers a maximum output of 612 horsepower and peak torque of 86.7 kg·m. Mercedes-Benz Korea said, "This engine is characterized by precisely controlled power and explosive power delivery," adding, "At very high speeds, the BlueDIRECT multi-injection system and multi-spark ignition technology provide engine efficiency and a smooth revving texture."
The AMG GLS 63 takes just 4.2 seconds to reach 100 kph from a standstill. That is the fastest among competing models. Top speed is 280 kph. The Maybach GLS sold by Maybach, Mercedes' luxury brand, has a maximum output of 557 horsepower, and the BMW X7 M has 530 horsepower.
The exhaust note is also impressive. In Sport Plus mode, the exhaust sounds distinctly different. It can be adjusted through the AMG variable performance exhaust system. Producing different exhaust notes for each drive mode adds to the enjoyment of driving.
Braking performance is also strong. Even under hard braking, this 2,685-kilogram vehicle came to a confident stop precisely where intended. The AMG GLS 63 is fitted with large brake discs on the front axle.
It felt stable even at high speeds above 100 kph. The ability to maintain stability while unleashing explosive performance is thanks to AMG Active Ride Control. Electric-mechanical actuators on the front and rear axles and a design that distributes the vehicle's weight in a stable manner reduce roll (the body leaning outward due to centrifugal force) during cornering.
It also comes with an electronic stability program (ESP), an electronically controlled rear limited-slip differential, a fully variable AMG all-wheel-drive system, and a suspension control system. These devices and systems precisely manage the vehicle's software to enable highly refined driving.
The second row is equipped with a variety of convenience features for passengers. Through the second-generation "MBUX" infotainment system and 11.6-inch displays, passengers can enjoy movies and music. Folding down the center backrest raised concerns about potential damage to the displays, but it slotted in perfectly. The space was also ample, allowing this reporter, 172 centimeters tall, to extend legs by about 60 degrees. However, unlike the Maybach GLS, there is no leg rest.
Accessing the third row felt somewhat disappointing. Getting in was difficult from the start. Because they are not captain's chairs, the second row has to be folded, and the power operation was slow. There is a handle behind the right-side second-row seat, but you have to bend at the waist. Sitting in the third row, knee room was so tight that even a single fist barely fit. It looked hard to sit there for a long time.
Having buttons in the trunk to adjust the third row automatically can be seen as a plus. Folding the third row made the trunk space very large. Folding down the second row as well gives about 2,400 liters of storage, enough to fit multiple golf bags. With the third row up, space is 355 liters. There is also separate storage under the trunk floor.
The wheelbase of the AMG GLS 63 (distance between the centers of the front and rear wheels) is 3,135 millimeters, longer than the X7 and the Escalade. Thanks to the long wheelbase, it can secure more storage space than other rivals. The car is 5,245 millimeters long, 2,030 millimeters wide, and 1,837 millimeters tall.
Convenience and safety features are diverse, befitting a flagship. The seats have a massage function, and the audio system is Burmester. The cup holders are temperature controlled. There is Active Parking Assist, which supports automated parking, and heated third-row seats. The body is tall and sightlines were limited on hills, but the "transparent hood" function that shows under the hood was useful.
The AMG GLS 63 is priced at 208.6 million won, including the individual consumption tax.