The expansive interior of the AMG GLS 63 is packed with premium comforts, luxurious materials, and enough driver conveniences to make you do a double-take to make sure you're not in a five-star hotel. This is about as good as it gets. The driver and front passenger get power and memory enabled seats, and they're ventilated and heated as well, as are the seats of second-row passengers. Seriously lush Nappa leather upholstery and a leather-clad performance steering wheel look and feel the part, but the opulent GLS' interior is beginning to look dated compared to recent efforts from Mercedes, with an abundance of buttons and an aging infotainment interface.
While the "S" in "GLS" is supposed to indicate that this vehicle is the SUV equivalent of the Mercedes S-Class, its interior follows a much different philosophy than its sedan relative. With upright seats and a somewhat cramped rear seat, the GLS manages decent interior dimensions that don't seem to translate to actual useable space. That means the GLS is not the limousine that the S-Class is. Up front, passengers get 40.3 inches of legroom while the rear seat makes do with 38.5 inches. The third row is less generous for large adults, with only 35 inches of legroom. Headroom is much more generous, never dropping below 38.9 inches at the very rear and boasting a maximum of 41.2 inches up front. The panoramic roof certainly helps make it feel like the ceiling is limitless, though.
|Mercedes-AMG GLS 63 Trims||AMG GLS 63 4MATIC|
|Headroom Front Seat||41.2 in.|
|Headroom Back Seat||40 in.|
|Legroom Front Seat||40.3 in.|
|Legroom Back Seat||38.5 in.|
|Shoulder Room Front||58.5 in.|
|Shoulder Room Rear||58.3 in.|
Unfortunately, the interior of the GLS is where the model's age starts to become very apparent. It can be seen in the lower quality of buttons, knobs, and even the steering wheel, all of which have made a big leap forward in more modern Mercedes. But that doesn't mean the cabin isn't a nice place to be. Nappa leather and black piano lacquer trim gave this GLS a dark and elegant look, while AMG carbon fiber trim asserted this machine's status as a performance machine. So did the DINAMICA suede-wrapped steering wheel for that matter, though the cheap-feeling plastic buttons placed as awkwardly as the air vents are features we would have liked to see done differently.
When utilizing all of the AMG's seating rows, you'll be left with a humble 16.2 cubic feet of cargo space, it's not gigantic, but it's enough for a decent grocery shopping run. The power-folding 50/50-split third-row seats are easily folded flat to create a more practical 49.4 cubic feet of space. That is enough room for some serious travel packing, or about four golf bags and their accompanying carts. With the second row of seats folded down, the GLS becomes a truly cavernous SUV. Space now increases to 93.8 cubic feet, just about as big as you're likely to find anywhere on the large SUV market. Personal storage space didn't blow us away, especially for an SUV of this size. The center console and glove compartment are big enough for personal effects only.
|Mercedes-AMG GLS 63 Trims||AMG GLS 63 4MATIC|
|Box Height (Area)||35.1 in.|
Sitting at the top of the GLS pile, the AMG 63 gets the bulk of features usually offered as optional extras on the lower models. On the outside, the AMG GLS gets LED head- and taillights, keyless start and remote locking, a power liftgate and 20-inch alloy cross-spoke wheels. Inside, the driver and front passenger can enjoy heated, ventilated and power-adjustable seats, while three-zone climate control keeps all occupants comfortable. Driver convenience features such as auto-dimming drivers side and rearview mirror, rain-sensing window wipers, and a surround-view camera system that makes the large AMG GLS a pleasure to pilot. The GLS shows off its premium status with the inclusion of small details such as soft closing doors, illuminated door sills, and an integrated garage door opener.
The absolute worst part about the GLS 63 we borrowed from Mercedes was its infotainment system, which, from the start, refused to work properly. Apple CarPlay and Android Auto are available, but plugging in a smartphone and cueing up the connectivity menu caused the system to glitch until we unplugged the phone, barring us from getting to use any smartphone interface on the cramped 8-inch infotainment screen. Aside from that, our main gripes have to do with the infotainment system itself. It's an earlier version of Mercedes' COMMAND system, which is lightyears better in its later iterations, and is distracting, slow to respond, and almost impossibly frustrating. At one point, after spending 10 minutes trying to input a single address into the onboard navigation system and having the system either fail to register inputs or take us to confusing menus, we gave up and resorted to using a smartphone dash mount. At the very least, the Harman Kardon sound system could pipe crisp sounds into the cabin using Bluetooth audio.