Mercedes-AMG Refreshes GLE 63 S And GLS 63 Lineup

Mercedes-AMG has rolled out its refreshed, high-output BiTurbo V8 lineup for 2027, pairing the familiar 603-horsepower engine with updated mild-hybrid systems, fresh styling, and heavy-duty transmissions across the GLS 63 and GLE 63 S models arriving at US showrooms before year’s end.

The current generations of Mercedes-Benz utility vehicles are getting a thorough refresh, highlighted by updates that bridge the gap between traditional combustion power and modern digital cabins. While the broader lineup spans inline-six engines and plug-in hybrid options such as the GLE 53, the top tier belongs to the eight-cylinder variants assembled in Alabama, as reported by Carbuzz. These flagship machines carry significant price tags, starting at $138,550 for the GLE 63 S SUV, $140,550 for the coupe, and $156,800 for the three-row GLS 63 before options.

2027 Mercedes-Benz GLE & GLS | First Drive

Powering the base trim is a 4.0L V8 Mild Hybrid setup paired with a 9-speed automatic transmission and All-Wheel Drive, generating 603 HP @ 5,500 rpm and 627 lb.-ft. of torque.

Engine Reworks and Mild-Hybrid Updates for the 4.0-Liter BiTurbo V8

On paper, the output figures for the M177 EVO 4.0-liter twin-turbocharged V8 remain unchanged from previous model years, pumping out 603 horsepower and 627 pound-feet of torque. Beneath the surface, however, Mercedes-AMG implemented a series of mechanical alterations aimed at boosting efficiency and engine response.

2027 Mercedes Benz AMG GLS 63 First Drive | Is This The Pinnacle Of People Moving Performance?

Complementing the V8 is an updated 48-volt electrical system powering an integrated starter generator as part of the mild-hybrid stop/start system. Despite tightening global regulations on high-displacement engines, Mercedes contends these modifications make the powerplant future-proof and secure its spot in the portfolio for the long haul.

While buyers often default to the safe and popular black interior, opting for Nappa leather in Macchiato Beige, Beech Brown, and Red Pepper lets you live a little, or you can spend a bit extra to get the exclusive MANUFAKTUR Yacht Blue, Tartufo Brown, or Carmine Red Nappa leather.

Mercedes-AMG Refreshes GLE 63 S And GLS 63 Lineup — Photo: caranddriver.com

Performance Figures and Transmission Mechanics on Colorado Test Routes

Mercedes reports that the GLE goes from 0 to 60 mph in 3.6 seconds (improved from 3.7 seconds in the prior generation), while the GLS achieves the same sprint in 3.9 seconds, down from 4.1. Jalopnik highlights that the GLS 63 gains a launch control function that worked like all Mercedes-AMG systems: flick the drive mode into Sport+, floor both the brake and gas pedals, feel the seatbelts yank tight, then release the brake and get pinned to your seat, allowing drivers to pin the vehicle forward with aggressive acceleration accompanied by a deep exhaust bellow.

Both performance models rely on a nine-speed automatic transmission carrying over for both the AMG GLE and GLS 63. Yet critics noted that the transmission can still feel slow to respond when drivers punch the throttle, even in aggressive drive modes. The standard air suspension manages body roll effectively, though neither vehicle can entirely mask its hefty curb weight—reaching 6,118 pounds for the GLS three-row luxury SUV—when cornering on asphalt.

Mercedes-Benz Revamps GLE Lineup with High-Tech Interior and Powerful AMG Hybrid

The evaluation vehicle was coated in an understated yet attractive Manufaktur Mystic Blue Metallic exterior paint paired with Truffle Brown Nappa leather, further equipped with optional 23-inch AMG forged multi-spoke wheels alongside optional carbon-ceramic brakes measuring 15.8 inches up front and 14.2 inches in the rear.

Interior Technology, Superscreen Integration, and Cabin Upgrades

Inside the cabin, the updated AMG models match the technology overhaul seen across the wider Mercedes-Benz portfolio.

Mercedes' 2027 Lineup Is INSANE — They're Coming For Everyone

The GLS 63 retains standard seating for six occupants with optional second-row captain’s chairs or a bench to seat seven, maintaining its utility as a luxury hauler.

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