2026 Mercedes-Benz GLS Specs, Trims, & Performance
The 2026 Mercedes-Benz GLS continues to lead as the “S-Class of SUVs,” providing Riverside families with a masterclass in three-row luxury. Featuring a refined exterior with a bold new radiator grille and horizontal slats, the GLS transports up to seven passengers in absolute comfort. Every 2026 model comes standard with AIRMATIC® air suspension and 4MATIC® fully variable all-wheel drive, ensuring a smooth ride on Riverside city streets or mountain trails. It remains the definitive choice for those requiring flagship space without sacrificing the prestigious material quality and poise of a Mercedes-Benz sedan.
Under the hood, the GLS utilizes advanced mild-hybrid powertrains that provide an extra boost of torque while improving overall efficiency. From the smooth inline-6 in the GLS 450 to the potent V8 in the GLS 580 and the handcrafted power of the AMG® GLS 63, there is a performance tier for every driver. With a standard towing capacity of 7,700 lbs and the latest MBUX software, the 2026 GLS is engineered to handle every Southern California adventure. The combination of electrical assistance and robust combustion ensure that power is always available when merging onto busy highways while maintaining a quieter cabin environment.
Quick Specs
- Handcrafted AMG® or Mild-Hybrid Biturbo engines
- Up to 603 horsepower and 627 lb-ft of torque
- 0 to 60 mph in as quick as 4.1 seconds (AMG® GLS 63)
- Three rows of seating for up to 7 adults
- Standard AIRMATIC® Air Suspension with Adaptive Damping
- Standard 7,700-lb towing capacity
GLS SUV Trim Levels
The 2026 GLS lineup offers a selection of engines tailored to different levels of luxury and performance for discerning Riverside drivers. The GLS 450 4MATIC® features a 3.0L inline-6 turbo engine with mild hybrid drive, delivering a refined 375 hp that is perfect for daily commuting. For more authoritative power, the GLS 580 4MATIC® utilizes a 4.0L V8 Biturbo producing 510 hp, providing effortless thrust even when fully loaded. For those seeking the pinnacle of SUV performance, the Mercedes-AMG® GLS 63 features a handcrafted V8 producing 603 hp and includes specialized suspension and active-valve exhaust. Each trim level is meticulously engineered to provide a unique balance of speed, efficiency, and sophisticated road presence.
| Trim Model | Engine Configuration | Horsepower | 0-60 MPH |
|---|---|---|---|
| GLS 450 4MATIC® | 3.0L Inline-6 Turbo w/ Mild Hybrid | 375 hp | 5.8 Seconds |
| GLS 580 4MATIC® | 4.0L V8 Biturbo w/ Mild Hybrid | 510 hp | 4.7 Seconds |
| AMG® GLS 63 | Handcrafted AMG® 4.0L V8 Biturbo | 603 hp | 4.1 Seconds |
Performance Specs and Driving Dynamics
The GLS is engineered to deliver confident handling and smooth acceleration, making it feel remarkably agile for its full-size dimensions. Standard AIRMATIC® air suspension improves ride comfort by adapting to the road surface hundreds of times per second, while the Adaptive Damping System ensures stability during spirited driving. The 4MATIC® all-wheel drive system provides fully variable torque distribution, giving drivers better traction on Riverside’s wet or dry roads. DYNAMIC SELECT modes allow you to tailor the vehicle’s character to your environment, adjusting throttle response and suspension firmness at the touch of a button. For the ultimate in control, the optional E-ACTIVE BODY CONTROL system can even scan the road ahead to proactively counteract bumps before you feel them.
Interior Features and Technology
Inside the GLS, passenger comfort is prioritized across all three rows with high-quality materials and innovative technology creating a first-class atmosphere. The MBUX infotainment system features dual 12.3-inch displays that provide intuitive access to navigation, media, and vehicle settings. The cabin is a sanctuary of digital artistry, featuring premium finishes and up to 84.7 cubic feet of cargo space with the rear seats folded. Standard and available interior highlights include:
- MBUX Navigation with Augmented Video and “Hey Mercedes” assistant
- Heated and ventilated power front seats with multicontour massage
- Burmester® Surround Sound System with Dolby Atmos® integration
- 5-zone automatic climate control and Panorama roof
- Power-folding 50/50-split 3rd-row seats and optional captain’s chairs
- Front and available 2nd-row wireless charging with NFC pairing
Exterior Design and Customization Options
The GLS features a sleek design that blends classic SUV proportions with modern styling elements to create a commanding presence on Riverside roads. Its visual impact is emphasized by LED Intelligent Light System headlamps and standard 21-inch wheels, with designs available up to 23 inches. Drivers can further personalize the GLS with MANUFAKTUR paint options like Twilight Blue Metallic or Alpine Grey, ensuring your flagship SUV reflects your personal style. Small details like illuminated running boards and chrome door handle inserts add both functional utility and a refined touch of sophistication to the overall aesthetic. The result is a vehicle that looks as sophisticated at a Riverside gala as it does parked at a local trail head.