2026 Mercedes-Benz GLS Model Review

The 2026 GLS SUV is engineered to provide effortless acceleration and a whisper-quiet ride, regardless of the load it carries. The lineup is defined by its integrated starter-generator (ISG) and 48-volt mild-hybrid system, which provides an extra boost of torque and enables "gliding" functions for improved efficiency.

• GLS 450 4MATIC®: Powered by a 3.0L inline-6 turbo engine, this model produces a robust 375 horsepower and 369 lb-ft of torque. It is the ideal balance of efficiency and strength for daily driving through Glendale and downtown Milwaukee.
• GLS 580 4MATIC®: For those seeking a more commanding presence, the 4.0L V8 biturbo engine delivers a staggering 510 horsepower and 538 lb-ft of torque. This powertrain transforms the GLS into a high-performance cruiser capable of reaching 60 mph in just 4.7 seconds.
• Mild-Hybrid Advantage: The 48-volt system ensures that the stop-start technology is virtually imperceptible, providing smooth transitions and immediate power delivery when merging onto the freeway. For detailed technical specs, you can reference the official Mercedes-Benz USA Press Room.

In Milwaukee, a luxury SUV must perform when the weather turns. Every 2026 GLS SUV comes standard with the 4MATIC® fully variable all-wheel drive system. Unlike traditional systems, this can distribute torque from 0 to 100 percent between the front and rear axles, ensuring maximum traction on icy Waukesha backroads or rain-slicked city streets.

The standard AIRMATIC® suspension is a game-changer for local drivers. It utilizes electronically controlled air springs that adapt to the road surface in real-time. On the highway, the vehicle can lower itself to improve aerodynamics and stability. When navigating deep snow, the driver can raise the suspension for increased ground clearance. Furthermore, with a maximum towing capacity of up to 7,700 lbs, the GLS SUV is ready to haul your boat to the lake with ease.

Step inside, and you are met with a cabin that defines "Sophisticated Luxury." The GLS SUV is designed to be a "third row" vehicle where the back seats are just as luxurious as the front.

• Seating for Seven: Standard seating accommodates seven, while the optional six-seat configuration replaces the second-row bench with individual power-adjustable Captain’s Chairs.
• Executive Comfort: Available features include heated, ventilated, and massaging seats for both the front and second rows. The use of hand-fitted upholstery and genuine wood trim creates an atmosphere of bespoke craftsmanship.
• Cargo Versatility: With all seats folded, the GLS offers a cavernous 84.7 cubic feet of cargo area. Even with the third row in use, there is ample space for groceries or sporting equipment for the kids' practice in Mequon.

The 2026 GLS SUV makes a statement without being overbearing. Its design language follows the Mercedes-Benz philosophy of "Sensual Purity," featuring clean lines and a muscular stance.

A key branding element for Mercedes-Benz is the iconic Star. Per brand standards, the Star is always presented against a black background to emphasize its radiant power. The LED Intelligent Light System not only enhances the vehicle's aesthetic but also provides superior visibility for night driving around the Milwaukee North area.

The 2026 GLS features the latest generation of the Mercedes-Benz User Experience (MBUX). This system utilizes artificial intelligence to learn your habits, such as your preferred cabin temperature or frequently dialed contacts.

• Dual Displays: A pair of 12.3-inch high-resolution screens act as the cockpit's centerpiece, offering customizable instrument clusters and a vivid infotainment interface.
• Wireless Connectivity: Standard wireless Apple CarPlay® and Android Auto™ allow you to sync your smartphone seamlessly, while the Burmester® Surround Sound System provides an immersive audio experience with 13 high-quality speakers.

Safety is a core value at Mercedes-Benz. The GLS SUV is equipped with a comprehensive suite of driver-assist technologies designed to act as an electronic co-pilot. The Standard Driver Assistance Package includes Active Brake Assist, Active Lane Keeping Assist, and the innovative PRE-SAFE® system. For verified safety data and crash-test results, we encourage you to visit the NHTSA or the IIHS official websites.

The GLS 450 is the perfect entry point into the flagship SUV lineup. It offers a sophisticated 3.0L inline-6 engine that delivers plenty of power for the average driver. Standard features include 21-inch wheels, a power sunroof, and the full MBUX suite. It is the ideal choice for those who prioritize a smooth, quiet ride for their daily commute.

Stepping up to the GLS 580 brings a powerful 4.0L V8 biturbo engine that satisfies the needs of performance enthusiasts. Beyond the engine, this trim adds several luxury amenities as standard, including five-zone climate control and multicontour front seats with massage features.

The 2026 Mercedes-Benz GLS SUV is more than just a vehicle; it is a commitment to excellence. From its robust performance in Wisconsin winters to its meticulously crafted interior, it remains the gold standard for luxury SUVs. We invite you to visit our showroom to explore our current new inventory and experience the "S-Class of SUVs" firsthand.

Whether you need to discuss financing options, schedule a service appointment, or receive a trade-in valuation, our team is dedicated to providing a premier dealership experience.

To learn more about the GLS SUV, visit our GLS SUV Research Hub. For a broader look at Mercedes-Benz’s lineup, explore our Mercedes-Benz Research Hub.

Does the GLS SUV have a third row?

Yes, the 2026 GLS SUV features a standard third row that is spacious enough for two adults to sit comfortably, making it a true seven-passenger vehicle.

What is the towing capacity of the 2026 GLS?

When properly equipped, the 2026 Mercedes-Benz GLS SUV can tow up to 7,700 lbs, making it suitable for boats and trailers.

Is Apple CarPlay® standard on the GLS?

Yes, wireless Apple CarPlay® and Android Auto™ are standard across all 2026 GLS SUV models.

Where is Mercedes-Benz of Milwaukee North located?

We are conveniently located in Milwaukee, serving the North Shore and Glendale. You can find our staff and directions here.

Can I trade in my current vehicle?

Yes, we provide competitive trade-in valuations to help you transition into your new Mercedes-Benz.

Do you offer certified pre-owned vehicles?

Yes, we have a wide selection of Mercedes-Benz Certified Pre-Owned vehicles that have undergone a rigorous 165+ point inspection.