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How Does the 2026 Mercedes-Benz AMG® GLS 63 Deliver Incredible Power

2026 Mercedes-Benz AMG® GLS 63 SUV Powertrain Specs

If you’re curious how a full-size luxury SUV can move like a performance coupe, buckle up. The 2026 Mercedes-Benz AMG® GLS 63 SUV powertrain specs take center stage at Mercedes-Benz of Arrowhead in Peoria, AZ, and the engineering behind this powerhouse is nothing short of wild—in the best possible way. Let’s dive into what gives this SUV its muscle and how all that tech turns raw power into road-ready capability.

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Which Engine Powers the 2026 Mercedes-Benz AMG® GLS 63 SUV?

Under the hood sits the iconic AMG® 4-liter biturbo V8, hand-built and stamped by its craftsman. It cranks out 603 hp and 627 lb.-ft. of torque, which is why this three-row SUV can rocket from 0–60 mph in about 4.1 seconds. That’s sports-car territory wrapped in family-size proportions. The “hot inside V” turbo layout puts the turbochargers between the cylinder banks, shortening airflow paths and helping the SUV respond quickly when you tap the throttle—like jumping onto the freeway or darting around slow traffic on Bell Road. The Integrated Starter-Generator adds electric torque at low speeds. Think of it as an instant shove that helps you get moving without waiting for the turbos to spool up.

And when cruising, AMG® Cylinder Management shuts down four cylinders to save fuel. You won’t even feel the switch—just notice fewer gas station stops. Dynamic engine mounts use magnetorheological fluid to adapt stiffness on the fly. Push the GLS 63 hard, and the mounts tighten, helping the SUV stay steady. Drive casually around Peoria, and they relax to keep things refined.

How Are the Driving Dynamics of the 2026 Mercedes-Benz AMG® GLS 63 SUV?

This SUV is built to handle. AMG® Performance 4MATIC®+ sends power where it’s needed, even directing everything to the rear wheels when you want a more playful feel. On winding desert roads, the electronic limited-slip differential helps you carve corners with control. The AMG® SPEEDSHIFT® TCT 9G transmission keeps the engine in its sweet spot with sharp, quick shifts—especially when using the paddle shifters in Sport or Sport+ mode. AMG® DYNAMIC SELECT adds six drive modes, including Trail and Sand, perfect for Arizona backroads. It also offers a customizable Individual mode, allowing you to adjust steering weight, exhaust sound, throttle response, and suspension stiffness. Speaking of suspension, AMG® RIDE CONTROL+ and Adaptive Damping use air springs and quick-reacting sensors to adjust height and firmness. The SUV can lower itself at highway speeds or lift to tackle deep ruts. AMG® ACTIVE RIDE CONTROL uses 48-volt-powered actuators to reduce body roll, making this big SUV feel surprisingly composed through turns.

For off-road situations, the OFFROAD menu and Transparent Hood camera view help you “see” obstacles hidden under the front end—great for rocky or uneven surfaces. The Downhill Speed Regulation system maintains a steady crawl between 1–11 mph on steep slopes, allowing for smooth braking so you can focus on positioning the vehicle. Braking power comes from a high-performance AMG® system with big red calipers and hefty rotors to stay consistent during spirited drives. And for an extra punch of personality, the AMG® Performance Exhaust lets you pick how bold you want the V8 soundtrack to sound. Thanks to a Class IV trailer hitch, the GLS 63 can tow up to 7,700 pounds—perfect for pulling a boat to Lake Pleasant, a big camper, or a car hauler.

Get the 2026 Mercedes-Benz AMG® GLS 63 SUV in Peoria, AZ!

The 2026 AMG® GLS 63 is more than a luxury SUV—it’s a powerhouse wrapped in sophistication. With massive strength, clever tech, advanced suspension systems, and a long list of performance tools, it’s ready for highways, trails, and towing alike. If you’re ready to check it out in person, Mercedes-Benz of Arrowhead in Peoria, AZ, has one waiting for you.