Mercedes-AMG GLS 63 Review: The Ultimate Luxury Performance SUV
The Mercedes-AMG GLS 63 stands at the top of the luxury SUV world, combining supercar-level power, three-row family practicality, and flagship Mercedes refinement. Often called the “S-Class of SUVs with AMG DNA,” the GLS 63 delivers an experience that few rivals can match.
Designed for buyers who demand performance without compromise, the AMG GLS 63 is not just about speed—it’s about commanding presence, comfort, and cutting-edge technology wrapped in one bold package.
Exterior Design: Aggressive Yet Elegant
The Mercedes-AMG GLS 63 has a design that instantly communicates power and prestige. Unlike standard GLS models, the AMG version features a more muscular stance and performance-focused styling cues.
Exterior Highlights
- Panamericana AMG grille with vertical slats
- Large air intakes for enhanced cooling
- Flared wheel arches and aggressive body lines
- Quad exhaust outlets with AMG sound tuning
- 21-inch wheels standard, with larger options available
Despite its size, the GLS 63 looks athletic rather than bulky. Its clean proportions and sharp detailing help it stand out as both a luxury vehicle and a high-performance machine.
Interior: AMG Performance Meets S-Class Luxury
Step inside the Mercedes-AMG GLS 63 and you’re greeted by an interior that blends AMG sportiness with Mercedes luxury craftsmanship.
Cabin Design and Comfort
- Premium Nappa leather upholstery throughout
- AMG sport seats with heating, ventilation, and massage
- Carbon fiber, aluminum, or wood trim options
- Ambient lighting with multiple color themes
- Multi-zone climate control for all three rows
The seating layout offers room for up to seven passengers, making the GLS 63 one of the few SUVs capable of combining serious performance with true family practicality.
Technology and Infotainment
Mercedes equips the AMG GLS 63 with an advanced digital cockpit designed to be intuitive and visually impressive.
Key Technology Features
- Dual widescreen digital displays for infotainment and driver information
- Advanced voice control system
- Wireless smartphone integration
- Head-up display with AMG-specific performance data
- Premium surround-sound audio system
The infotainment system is fast, responsive, and customizable, allowing drivers to tailor displays to focus on navigation, media, or performance metrics.
Engine and Performance: A True AMG Powerhouse
At the heart of the Mercedes-AMG GLS 63 lies a hand-built twin-turbo V8 engine, supported by mild-hybrid technology for improved responsiveness.
Performance Specifications
| Specification | Mercedes-AMG GLS 63 |
|---|---|
| Engine | 4.0-liter Twin-Turbo V8 |
| Horsepower | 603 hp |
| Torque | 627 lb-ft |
| Transmission | 9-speed automatic |
| Drivetrain | Performance AWD |
| 0–60 mph | ~4.1 seconds |
| Towing Capacity | ~7,700 lbs |
This level of performance is extraordinary for a full-size three-row SUV. Acceleration is immediate, smooth, and relentless, delivering a thrilling driving experience whether on the highway or a winding road.
Driving Experience: Surprisingly Agile for Its Size
Despite weighing well over two tons, the AMG GLS 63 feels remarkably composed and agile.
Driving Characteristics
- Adaptive air suspension balances comfort and sportiness
- Active roll stabilization minimizes body lean
- Precise steering for confident high-speed control
- Multiple drive modes for comfort, sport, and performance driving
In comfort mode, the GLS 63 glides effortlessly, making it perfect for long journeys. Switch to sport modes, and the SUV transforms into a performance machine with sharper throttle response and a more aggressive exhaust note.
Ride Quality and Comfort
One of the GLS 63’s biggest strengths is its ability to deliver luxury-car comfort alongside performance tuning.
- Smooth ride even on rough surfaces
- Excellent sound insulation for a quiet cabin
- Adjustable suspension height for easier entry and loading
This dual personality makes the AMG GLS 63 suitable for daily commuting, long family trips, and spirited weekend drives.
Safety and Driver Assistance
Safety is a top priority, and the GLS 63 includes a comprehensive suite of advanced driver-assistance systems.
Safety Features
- Adaptive cruise control
- Lane keeping and lane change assist
- Blind-spot monitoring
- Automatic emergency braking
- 360-degree camera system
- Parking assist features
These systems reduce driver fatigue and enhance confidence, especially in urban environments and long highway drives.
Space, Cargo, and Practicality
Even with its performance focus, the AMG GLS 63 remains a highly practical SUV.
Interior Space
- Spacious first and second rows
- Third row suitable for adults
- Easy access thanks to wide-opening doors
Cargo Capacity
| Configuration | Cargo Space |
|---|---|
| Behind 3rd Row | ~17 cubic feet |
| 2nd Row Folded | Large, flat load area |
| Maximum Capacity | Excellent for road trips |
The combination of space and power makes the GLS 63 ideal for families who refuse to compromise on performance.
Fuel Economy
Fuel efficiency is not the primary focus of the AMG GLS 63, but mild-hybrid assistance helps improve real-world driving efficiency.
| Driving Type | Estimated MPG |
|---|---|
| City | ~15 MPG |
| Highway | ~20 MPG |
| Combined | ~17 MPG |
While these numbers are modest, they are reasonable considering the power and size of the vehicle.
Mercedes-AMG GLS 63 vs Rivals
Comparison Table
| Model | Key Strength |
|---|---|
| Mercedes-AMG GLS 63 | Best balance of luxury & power |
| BMW X7 M60i | Sharp handling |
| Range Rover Sport SV | Off-road prestige |
| Audi RS Q8 | Sportiest driving feel |
The GLS 63 stands out for its three-row layout combined with true AMG performance, something many competitors cannot match.
Pros and Cons
Pros
- Massive V8 power and thrilling acceleration
- Luxurious, spacious interior
- Advanced technology and safety features
- Excellent balance between comfort and performance
- Strong towing capability
Cons
- High purchase price
- Fuel economy is below average
- Large size may be challenging in tight city spaces
Final Verdict: Is the Mercedes-AMG GLS 63 Worth It?
The Mercedes-AMG GLS 63 is one of the most complete luxury performance SUVs available. It offers supercar-level power, flagship luxury, and real three-row practicality—a combination that very few vehicles can replicate.
Best For:
- Buyers who want luxury without sacrificing performance
- Families seeking space with excitement
- Drivers who want a commanding road presence
- Enthusiasts who appreciate AMG engineering
If you want an SUV that can comfortably carry your family during the week and dominate the road on the weekend, the Mercedes-AMG GLS 63 delivers an experience that fully justifies its status at the top of the segment.