Mercedes-AMG GLS 63 4MATIC
The Mercedes-AMG GLS 63 4MATIC is the high-performance version of Mercedes-Benz’s large three-row GLS luxury SUV, combining V8 performance with genuine family-sized space. In U.S. specification, the 2026 model produces 603 hp, seats up to seven, and can tow up to 7,700 lb. Mercedes-Benz
Performance
The 2026 U.S. model uses a handcrafted 4.0-liter twin-turbo V8 with 48-volt hybrid assist, producing 603 hp and 627 lb-ft of torque. An AMG SPEEDSHIFT 9-speed transmission and fully variable AMG Performance 4MATIC all-wheel drive help propel this roughly 6,100-lb SUV from 0–60 mph in a claimed 4.1 seconds. Mercedes-Benz
Chassis and driving character
This is more than a GLS with a large engine. AMG ACTIVE RIDE CONTROL, adaptive air suspension, an electronically controlled limited-slip rear differential, high-performance brakes and configurable AMG drive modes are intended to control body movement while preserving long-distance comfort; 4MATIC can continuously vary torque distribution according to traction and driving conditions. Mercedes-AMG
Luxury and practicality
Despite the AMG treatment, it remains a full-size luxury SUV: the 2026 U.S. version offers seven seats as standard or six optionally, with 17.4–84.7 cu ft of cargo capacity. Dual 12.3-inch displays, AMG-specific instrumentation, extensive leather and trim options, and available wheels up to 23 inches reinforce the combination of flagship-SUV luxury and performance. Mercedes-Benz
What makes it special
Its defining quality is the breadth of its abilities: V8 soundtrack and sports-car-like acceleration in a three-row SUV that can still carry a large family and tow substantial loads. The tradeoffs are equally substantial—size, roughly 6,118-lb curb weight, premium-fuel consumption and a 2026 U.S. starting MSRP of $151,050—so the GLS 63 is primarily compelling for buyers who specifically want AMG performance without giving up the space of Mercedes’ largest SUV. Mercedes-Benz
