2027 Mercedes-AMG
GLS 63

The 2027 Mercedes-AMG GLS 63 is the performance flagship of Mercedes-Benz's three-row SUV lineup, and with the most significant powertrain update in the model's history, it has never been more deserving of that title. Powered by the new AMG M177 EVO 4.0-liter twin-turbo V8 with flat-plane crankshaft, the GLS 63 produces 603 horsepower and 627 lb-ft of torque — increases of meaningful significance over the outgoing model — supplemented by a 48-volt mild-hybrid system adding 23 hp and 151 lb-ft of electric assist. Zero to 60 mph takes 3.9 seconds. Pricing is expected to start from approximately $160,000, with the GLS 63 arriving at U.S. dealers in early 2027.

The flat-plane crankshaft is the headline engineering change in the M177 EVO. By replacing the conventional cross-plane crank with a flat-plane unit, AMG engineers have reduced rotating mass, allowed the engine to rev more freely and respond more precisely to throttle inputs, and laid the foundation for a new generation of AMG V8 engines that will meet upcoming global emissions standards without sacrificing the character that defines AMG performance. The GLS 63's version of the M177 EVO is shared with the simultaneously revealed GLE 63 S Coupe, and it produces the same 603 hp output in both applications. A newly developed AMG Performance exhaust system with electronically controlled valves provides a sound spectrum from discreet in Comfort mode to assertive in Sport Plus.

The 2027 GLS 63 inherits the new GLS's landmark interior update — the MBUX Superscreen spanning the full dashboard width with three 12.3-inch displays, MB.OS operating system with AI-based voice control, and fourth-generation MBUX — while adding AMG-specific sport seats, AMG RIDE CONTROL+ air suspension with adaptive damping, a Panamericana-inspired AMG grille with enlarged air intakes, and the model's signature twin rectangular AMG Performance exhaust tips. Seven-passenger seating, available 23-inch wheels, and the Executive Rear Seat package — adding heated, ventilated, and massaging second-row seats — make the GLS 63 a uniquely rare proposition: a three-row SUV that is genuinely, seriously fast.

Starting Price: Expected from approximately $160,000

Horsepower: 603 hp, 627 lb-ft (plus 23 hp / 151 lb-ft mild-hybrid assist)

0–60 Time: 3.9 seconds

Engine: 4.0-liter twin-turbo V8 with flat-plane crankshaft (M177 EVO)

On Sale: Early 2027 (U.S. arrival)

How fast is the 2027 Mercedes-AMG GLS 63?

The 2027 GLS 63 reaches 60 mph in 3.9 seconds, powered by a 603-hp 4.0-liter twin-turbo V8 with flat-plane crankshaft and 48-volt mild-hybrid assist providing an additional 23 hp and 151 lb-ft of torque.

What is new about the 2027 AMG GLS 63 engine?

The 2027 GLS 63 uses the new AMG M177 EVO V8 with a flat-plane crankshaft — a fundamental engineering change that reduces rotating mass, improves throttle response, allows the engine to rev more freely, and meets upcoming global emissions standards. Output is 603 hp and 627 lb-ft of torque.

When will the 2027 Mercedes-AMG GLS 63 arrive in the U.S.?

The 2027 GLS 63 is expected to arrive at U.S. dealers in early 2027, following the standard GLS's second-half 2026 arrival. Pricing is expected to start from approximately $160,000.

Does the 2027 AMG GLS 63 have the MBUX Superscreen?

Yes. The 2027 GLS 63 inherits the new GLS's MBUX Superscreen — three 12.3-inch displays beneath a seamless glass panel spanning the full dashboard — powered by MB.OS with AI voice control and fourth-generation MBUX.

How many passengers does the 2027 AMG GLS 63 seat?

The 2027 AMG GLS 63 seats seven passengers across three rows. The available Executive Rear Seat package adds heated, ventilated, and massaging seats to second-row occupants.

The 2027 Mercedes-AMG GLS 63 is the rare SUV that manages to be genuinely impressive on both dimensions that matter: the performance numbers are extraordinary for a three-row family vehicle, and the luxury credentials are impeccable. A 3.9-second 0–60 time in a seven-passenger SUV with a MBUX Superscreen dashboard and available massaging rear seats is not a compromise — it is an achievement. The new M177 EVO flat-plane V8 ensures the GLS 63 remains at the cutting edge of performance SUV engineering through the end of this decade. For Loeber Motors customers who want the best of all worlds, the 2027 GLS 63 delivers them all at once.

Loeber Motors is your premier Mercedes-Benz dealer in the Chicago area, serving Lincolnwood, Evanston, Skokie, and the North Shore. Our team of certified Mercedes-Benz experts is ready to help you explore the full 2027 lineup. Visit us, call, or configure your vehicle online today.