The Mercedes GLS G63 AMG sits at the apex of the luxury SUV hierarchy, merging a handcrafted V8 engine with a cabin that rivals private jets. It’s not merely a people mover; it’s a statement of engineering excess that still coddles seven occupants. Below we break down every facet — design, performance, technology, ownership realities, and how it stacks up against rivals — so you can decide whether this flagship earns a spot in your garage.
Key Takeaways
- Hand-built 4.0 L twin-turbo V8 delivers 577 hp / 627 lb-ft, 0–60 mph in 4.5 seconds.
- AMG Performance 4MATIC+ with fully variable torque split front-to-rear and side-to-side.
- Air suspension with adjustable ride height and dedicated off-road modes.
- MBUX dual-screen cockpit with natural voice control and over-the-air updates.
- Strong residual values — typically 60–70 % retained after three years.
- Premium fuel required — see our guide on premium fuel requirements for Mercedes for details.
Design That Commands Attention
Exterior Presence
The GLS G63 AMG wears its performance intent overtly. The Panamericana grille — vertical chrome slats over a jet-black mesh — dominates the nose, flanked by Multibeam LED headlamps that project 1.3 million pixels per side. Flared wheel arches cover 22- or 23-inch forged AMG wheels wrapped in 285/45 R22 performance rubber. At the rear, a roof spoiler, quad trapezoidal exhaust tips, and a diffuser insert signal the V8 beneath.
Mercedes GLS G63 AMG showing the Panamericana grille and flared arches.
Image source: cimg0.ibsrv.net
Interior Craftsmanship
Open the doors and you’re greeted by Nappa leather on every seating surface, open-pore wood or carbon-fiber trim, and a 64-color ambient lighting system that traces the dashboard, doors, and center console. The second row offers executive-class recline and heating/ventilation; the third row is best reserved for children or short hops. Cargo space measures 17.4 cu ft behind row three, expanding to 84.7 cu ft with rows two and three folded.
Personalization via AMG Performance Studio
Buyers can specify unique paint (e.g., MANUFAKTUR Opalite White Bright), contrast stitching, embossed headrests, and even a personalized welcome animation on the central display. The studio also offers a Track Pace data-logging package for circuit days.
Performance Powerhouse Under the Hood
The M177 V8: Hand-Assembled in Affalterbach
Each 4.0-liter biturbo V8 is built by a single technician — “one man, one engine” — and signed on a plaque atop the motor. Twin-scroll turbos nestle inside the cylinder banks for minimal lag; a dry-sump lubrication system ensures oil pressure during high-G cornering. Output: 577 hp at 6,000 rpm, 627 lb-ft from 2,500–5,000 rpm.
Hand-built M177 V8 with twin-scroll turbos tucked inside the V.
Image source: cars.carsxa.com
9G-TRONIC Transmission & 4MATIC+
The nine-speed automatic uses a torque converter for smooth launches and a wet clutch for rapid upshifts. In Sport+ and Race modes it holds gears to redline and double-downshifts under braking. The AMG Performance 4MATIC+ system sends 0–100 % of torque to either axle and, via an electronically controlled rear differential, 0–100 % side-to-side — enabling drift-mode antics on a closed course.
Ride Control Air Suspension
Air springs replace steel coils, offering five ride-height settings (–30 mm to +60 mm vs. standard). Adaptive damping adjusts per wheel every 2 milliseconds. Selectable modes: Comfort, Sport, Sport+, Individual, and Trail. Trail mode raises the body, softens damping, and activates low-range gearing for steep, loose surfaces.
Technology That Keeps You Connected
MBUX Infotainment — Second Generation
Dual 12.3-inch screens merge into a single glass panel. “Hey Mercedes” natural-language voice assistant controls navigation, climate, seat massage, and even the panoramic sunroof. Wireless Apple CarPlay / Android Auto, 5G hotspot, and OTA updates keep the stack current. Augmented-reality navigation overlays turn arrows onto a live camera feed at complex intersections.
Driver-Assistance Suite (Standard)
| System | Function |
|---|---|
| Active Distance Assist DISTRONIC | Adaptive cruise with stop-and-go |
| Active Steering Assist | Lane-centering up to 130 mph |
| Active Brake Assist | Autonomous emergency braking for vehicles, pedestrians, cyclists |
| Night View Assist Plus | Thermal imaging highlights humans/animals beyond headlamp range |
| Traffic Sign Assist | Reads speed limits, no-passing zones, school zones |
These features align with the latest NHTSA recommendations for forward-collision avoidance.
Rear-Seat Entertainment
Optional dual 11.6-inch HD screens mount to front seatbacks, each with HDMI, USB-C, and wireless headphone support. The Burmester 4D surround system (26 speakers, 1,710 watts) adds exciters in the front seats for tactile bass.
Ownership Experience: Daily Reality
Driving Dynamics
Despite a 5,700-lb curb weight, the GLS G63 AMG masks mass well. Rear-axle steering (optional) reduces turning circle by 1.5 ft and improves high-speed stability. Steering weighting is consistent, though feedback remains filtered — typical for the segment. In Comfort mode the ride absorbs expansion joints silently; Sport+ firms the damping without becoming harsh.
Fuel Economy & Running Costs
EPA combined rating: 13 mpg (11 city / 15 highway). Real-world mixed driving often lands at 10–11 mpg. Annual fuel cost at $3.80/gal ≈ $4,200. The 24.6-gallon tank yields ~320 miles per fill. For a deeper look at fuel requirements across the lineup, see which Mercedes models need premium gas and alternatives to premium gasoline.
Maintenance Schedule & Costs
| Interval | Service |
|---|---|
| 10,000 mi / 1 yr | Synthetic oil & filter, brake fluid, cabin filter |
| 20,000 mi | Tire rotation, brake inspection |
| 40,000 mi | Air suspension leak check, spark plugs |
| 60,000 mi | Transmission fluid, transfer case fluid |
Dealer labor rates average $190–$220/hr. A prepaid maintenance plan (typically $2,800–$3,500 for 4 yrs / 50k mi) can soften the blow. Using regular fuel voids warranty on the M177 — review the pros and cons of regular fuel before considering it.
Depreciation & Resale
Three-year retention: 62–68 % for clean, low-mileage examples. Limited production (~3,000 units/year in the U.S.) and the AMG badge support values. Certified Pre-Owned (CPO) units add a 1-yr / unlimited-mile warranty after the original 4-yr / 50k-mi coverage expires.
Competitor Comparison
| Model | Base Price | Power | 0–60 mph | Towing | Third Row | Off-Road Modes |
|---|---|---|---|---|---|---|
| Mercedes GLS G63 AMG | $165,900 | 577 hp | 4.5 s | 7,700 lb | Yes (tight) | Trail, Sand, Rock |
| Porsche Cayenne Turbo GT | $185,500 | 631 hp | 3.3 s | 7,700 lb | No | Gravel, Mud, Sand |
| BMW X7 M60i | $115,400 | 523 hp | 4.5 s | 7,500 lb | Yes (usable) | xSand, xRocks |
| Range Rover Sport SV | $182,000 | 626 hp | 3.6 s | 7,716 lb | No | All-Terrain Progress Control |
The GLS G63 AMG uniquely blends seven-seat practicality with genuine off-road hardware — something the Porsche and Range Rover lack. The BMW undercuts on price but trails in interior opulence and low-range gearing.
Practical Buying Guide
New vs. Certified Pre-Owned
- New: Full customization, latest MY updates, 4-yr/50k warranty.
- CPO (2–3 yr old): 20–30 % off MSRP, remaining factory warranty + 1-yr CPO extension, known depreciation hit already taken.
Best Time to Purchase
Dealer incentives peak in Q4 (Oct–Dec) when next-model-year allocation arrives. End-of-quarter pushes (Mar, Jun, Sep) can also yield 3–5 % off sticker. Monitor current market trends for SUV pricing for broader context.
Financing & Insurance
Mercedes-Benz Financial Services frequently offers 3.99–4.99 % APR on 60-mo loans for tier-1 credit. Lease residuals are set high (~60 % at 36 mo / 30k mi), keeping payments manageable. Insurance: expect $2,800–$3,500/yr for full coverage; bundling home/auto can shave 10–15 %.
Must-Have Options
- Rear-axle steering — transforms parking and high-speed lane changes.
- AMG Track Pace — real-time lap data, sector times, video overlay.
- Executive Rear Seat Package — heating, ventilation, massage, folding tables.
- Manufaktur paint/leather — protects resale uniqueness.
Where to Shop
Start with the Mercedes-Benz official website to build and price, then cross-shop certified dealers. For used inventory, filter Autotrader/Cars.com for CPO status and request a Carfax. Always verify the VIN matches the AMG build sheet (code 27U for G63).
Evolution of the Segment
The GLS G63 AMG didn’t appear in a vacuum. Its lineage traces back to the early 2000s when luxury brands began grafting supercar engines onto truck frames. Understanding the evolution of the luxury SUV segment and the defining characteristics of an SUV helps contextualize why this model commands a six-figure premium.
Frequently Asked Questions
How fast is the Mercedes GLS G63 AMG?
0–60 mph in 4.5 seconds; top speed electronically limited to 174 mph (with AMG Driver’s Package).
Can the third row accommodate adults?
Only for short trips. Legroom is 31.8 inches — best for kids or occasional use.
Is a hybrid version available?
Not yet. Mercedes has confirmed a plug-in hybrid AMG variant for the next model cycle (expected 2027).
What is the towing capacity?
7,700 lb with the factory tow hitch and trailer stability assist.
Are there common reliability concerns?
Early 2021–22 builds saw occasional air-suspension compressor failures; a TSB revised the part in late 2022. Software glitches in MBUX are resolved via OTA updates.
Can I customize interior colors beyond the standard palette?
Yes. The AMG Performance Studio offers virtually any leather hue, contrast stitching, and piping — lead time 12–16 weeks.
Conclusion: Why the GLS G63 AMG Stands Alone
The Mercedes GLS G63 AMG is a paradox resolved: a 2.6-ton SUV that can embarrass sports cars on a straight, then carry seven people in whisper-quiet luxury across a desert wash. Its hand-built V8, torque-vectoring all-wheel drive, and air suspension create a breadth of capability no rival matches. Yes, it drinks premium fuel like a thirsty V8 should, and the price tag exceeds many condos. But for buyers who refuse to choose between performance, practicality, and prestige, the GLS G63 AMG remains the singular answer.
Ready to experience it? Schedule a test drive at your nearest Mercedes-Benz dealer and ask for the AMG Performance Studio walkthrough — it’s the only way to grasp the depth of personalization available.