From Road & Track · · 2m
Mercedes-AMG GLS63: Luxury SUV with Sports Car Drive
The Mercedes-AMG GLS63 combines luxury SUV space with sports car handling, using a flat-plane V-8 engine and advanced chassis tech.
In brief
The Mercedes-AMG GLS63 combines luxury SUV space with sports car handling, using a flat-plane V-8 engine and advanced chassis tech. The 2027 Mercedes-AMG GLS63 delivers 603 hp and 627 lb-ft torque with sports car-like handling, featuring a flat-plane V-8 engine and torque-vectoring rear differential. Originally…
New GLS Class Update
The Mercedes-Benz GLS Class features 3000 new or revised components across its 17-foot, 6100-pound SUV body.
Flat-Plane V-8 Engine
The AMG GLS 63 uses a twin-turbocharged 4.0-liter V-8 producing 603 hp and 627 lb-ft of torque with a new flat-plane crankshaft.
Engine Efficiency Improvements

The flat-plane crank improves combustion efficiency and emissions, with a new engine block to reduce vibration from the high-winding V-8.
Exhaust System Innovation
Mercedes engineers adjusted exhaust cam lobes to create a 15-degree difference on the left bank and 20-degree difference on the right bank for smoother sound.
Powertrain Development
The new V-8 uses a super high-tumble Miller cycle with 47.8 psi boost from twin-scroll turbochargers to maintain power output.
Chassis and Handling

The GLS 63 features adaptive dampers, 48-volt active anti-roll bars, and torque-vectoring rear differential for sports car-like handling.
Lateral Acceleration
The GLS 63 achieves 1.0 g of lateral acceleration in corners, a remarkable figure for a three-ton SUV with seven seats.
Tires and Performance
The GLS 63 uses Michelin Pilot Sport 4 tires with 275/50-21s front and 315/45-21s rear for optimal grip and comfort.
Luxury Interior Features
The GLS 63 includes standard 12.3-inch displays, heated seats, ventilation, and massage for all rows with optional features.
Safety Technology
The 2027 GLS features 10 exterior cameras, five radar sensors, and 12 ultrasonic modules for advanced driving aids.
Next-Generation Tech
Mercedes plans to update the GLS with Level 2 hands-free eyes-on autonomy in the next year, improving over current Level 3 Drive Pilot tech.
What it means
The 2027 Mercedes-AMG GLS63 delivers 603 hp and 627 lb-ft torque with sports car-like handling, featuring a flat-plane V-8 engine and torque-vectoring rear differential.





