2017 Mercedes-Benz GLS Class Review

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2018
The Car Connection
2018
The Car Connection

The Car Connection Expert Review

John Voelcker John Voelcker Senior Editor
June 12, 2017

The 2017 Mercedes-Benz GLS gets the first-class upgrade along with its name change—and a Maybach edition is waiting in the wings.

The 2017 Mercedes-Benz GLS-Class marks a significant, mid-cycle upgrade for what was previously knew as the GL-Class. As part of a nomenclature change sweeping the entire brand, each of the German luxury maker's sport-utility vehicles has received new badging and a full or partial makeover to bring the lineup into more obvious parallels with its sedans—so this large, three-row SUV becomes the GLS, to align it with the largest S-Class sedan. Hence the S in its new name.

The GLS-Class earns a score of 7.8 on our scale. (Read more about how we rate cars.)

It might not be the S-Class of SUVs yet, but it's close. It's essentially the same size and the same package as before, but the largest utility vehicle in the Mercedes-Benz lineup gets some significant updates—including new front and rear styling, new infotainment features, updated cabin appointments, and new 9-speed automatic transmissions. There are three powertrain options: two gasoline engines, and an even quicker AMG GL63 performance model at the top of the lineup. Last year, a diesel-powered GL350d was available, but that model won't return to the States.

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The updated front-end appearance falls right into line with those of other current Mercedes-Benz vehicles; the front-end look is bolder up at the top—more emphatic is a good way to put it—with the large three-pointed star, a chunkier grille with two-bar "wings" on either side of a larger three-pointed star, and a more drawn-back look to the air dam, plus fenders that are more expressively sculpted.

Inside, the refresh is modest but noticeable. The infotainment screen now stands atop the middle of the dash, as it does in many other models from the brand, although it’s not quite the complete, cohesive, flowing remake that’s been given to the C-Class sedans and their GLC-Class crossover counterparts. Finishes have been upgraded, including several new upholstery options, and the general ambience of the cabin is a step up.

Mercedes GLS performance, comfort, and features

Starting at the bottom of the lineup, the entry-level model is a GLS450, with a twin-turbocharged 3.0-liter V-6 producing 362 horsepower and 369 pound-feet of torque. The GLS550 is the higher-performance option, and it makes 449 hp and 516 lb-ft from its 4.7-liter twin-turbocharged V-8. Serious driving enthusiasts who want a practical three-row utility vehicle in the garage will go for the top-performance GLS63, with a 5.5-liter twin-turbo V-8 making 577 hp and 561 lb-ft.

The packaging of the GLS carries over from the GL. Either SUV is one of the few that provides real, adult-size seating space in all three rows (although that third row can require a bit of agility to get to). In front, passengers can ride on ventilated seats with a massage function. The second-row seats can be heated, and folded down with optional power assistance. The best trick these models have is their flip-and-fold feature. The power-folding third-row seats stow for more cargo space, giving almost 100 cubic feet with second and third rows folded down—not quite as much as a long-wheelbase Escalade, but for considerably better for passengers who aren't riding atop a live rear axle.

Mercedes continues to offer an Off-Road Engineering package in the GLS that boosts ride height from the usual 8.5 inches up to a full foot. Tow ratings haven’t been released yet either, yet the outgoing GL can pull up to 7,500 pounds.

The GLS arrives with a great set of safety credentials, although no crash-test results from either the IIHS or the NHTSA. It carries over with much of the same underpinnings as its GL predecessor—and that model has an excellent real-world record for occupant protection. Standard safety gear on the GLS-Class includes a rearview camera system, Pre-Safe, Attention Assist to help warn you if you’re drowsy, and a full suite of airbags and stability controls. Options include blind-spot monitors, an active lane keep system that actually steers to keep you in your lane (hands on the wheel, though), and a pedestrian detection system with automatic emergency braking. A heated adaptive windscreen wiper system should help give you the best visibility in winter weather, too.

Standard features across the GLS lineup include remote start, cruise control, a power driver’s seat with memory settings, a power tailgate, and power folding side mirrors. Prices and final options packaging will be announced closer to the date the GLS starts to arrive at dealers, now pegged for late March 2016.

The company has hinted that it may add a Mercedes-Maybach version of the GLS-Class, but such a model hasn’t yet been announced. Unlike the Mercedes-Maybach S-Class, whose wheelbase was extended beyond that of the longest S-Class, a GLS in Maybach trim would likely have the same dimensions—but considerably more luxury to let it compete with the ultra-luxe Range Rover SV Autobiography series. Such a model likely won't arrive for a year or two

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$67,050
MSRP based on GLS 350d 4MATIC SUV
 
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7.8
Overall
Expert Rating
Rating breakdown on a scale of 1 to 10?
Styling 8
Performance 8
Comfort & Quality 10
Safety N/A
Features 8
Fuel Economy 5
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