2026 Mercedes-Benz GLS

The 2026 Mercedes-Benz GLS is a premium all-wheel-drive SUV with seating for 6–7 passengers, available through Mercedes-Benz of Lynnfield in Lynnfield, MA. This page brings together the GLS lineup’s trim pricing, performance, dimensions, towing capability, fuel requirements and cargo information, along with comparisons to other 2026 Mercedes-Benz SUVs. Across four trims, the GLS ranges from a 375-hp six-cylinder configuration to a 603-hp V8-powered AMG model. Shoppers can review current Mercedes-Benz offerings, explore purchase resources and plan a visit through the dealership’s online tools.

Starting MSRP

$90,250

Horsepower

375–603 hp

EPA MPG

19 city / 24 hwy

Max Towing

7,700 lbs

Seating

6–7 seats

Drivetrain

All Wheel Drive

Fuel

Premium Unleaded (Required)

Body Style

SUV

How the 2026 Mercedes-Benz GLS Compares Across the Mercedes-Benz Lineup

Pricing, propulsion, efficiency and towing help define the differences among Mercedes-Benz SUVs. The 2026 Mercedes-Benz GLS starts at $90,250; MSRP excludes tax, title, registration and dealer fees.

Compared with the 2026 Mercedes-Benz EQS SUV, the GLS starts at $90,250 versus $89,950, uses premium unleaded fuel and offers all-wheel drive, while the EQS SUV uses electric power and has a 3,500-lb maximum towing capacity. The GLS’s configuration suits shoppers seeking gasoline power and 7,700 lbs of towing, while the EQS SUV may suit buyers focused on an electric drivetrain.

Compared with the 2026 Mercedes-Benz GLE Coupe, the GLS starts at $90,250 versus $77,250. Both use all-wheel drive and premium unleaded fuel, while the GLE Coupe is rated at 375–603 hp, 14–19 city / 19–25 highway MPG and 7,700 lbs of towing; the GLS lists 19 city / 24 highway MPG, making the difference relevant to buyers weighing SUV proportions, efficiency and power within the gasoline lineup.

Compared with the 2026 Mercedes-Benz EQE SUV, the GLS starts at $90,250 versus $64,950 and provides 7,700 lbs of towing. The EQE SUV uses electric power, offers 76–98 city / 72–87 highway MPGe, a 230–302-mile electric range and rear-wheel drive or all-wheel drive, favoring shoppers prioritizing electric operation and charging-based travel.

2026 Mercedes-Benz GLS Specifications and Configuration

The GLS is a five-door SUV with automatic transmission, all-wheel drive and premium unleaded fuel required. Across its four trims, output ranges from 375 to 603 hp and torque from 369 to 627 lb-ft, with six- or eight-cylinder engines measuring 3.0–4.0 liters and 2,999–3,982 cc.

Performance equipment varies by trim. The GLS 450 4MATIC uses a 3.0-liter inline six-cylinder engine with 375 hp and 369 lb-ft of torque. The GLS 580 4MATIC has a 4.0-liter V8 producing 510 hp and 538 lb-ft, while the AMG GLS 63 uses a 4.0-liter V8 generating 603 hp and 627 lb-ft.

The GLS reaches 60 mph in 5.8 seconds and can tow up to 7,700 lbs. It measures 205 inches long, 79.9 inches wide and 71.8 inches high, with a 123.4-inch wheelbase and 84.9-inch width including mirrors. Cargo space behind the rear seats is 17.4 cubic feet.

Buying a 2026 Mercedes-Benz GLS in Lynnfield

Mercedes-Benz of Lynnfield serves shoppers in Lynnfield, MA, with online tools for researching new vehicles, valuing a trade and beginning the financing process. The store receives vehicles on a rolling basis, so the search inventory link is the appropriate place to review current listings.

For purchase planning, shoppers can use the trade-in resource at value your trade and contact Mercedes-Benz of Lynnfield at (781) 868-4139. The dealership is located at 385 Broadway, Rte 1 North, Lynnfield, MA 01940.

What to Weigh Before Buying

Trim selection changes the GLS experience substantially, from the 375-hp GLS 450 4MATIC to the 603-hp AMG GLS 63. Consider how much power, towing capacity, seating flexibility and cargo room fit the intended driving routine.

Fuel planning is also central because premium unleaded fuel is required. The GLS is rated at 19 city and 24 highway MPG, while its 23.8-gallon fuel capacity and 5,523-lb curb weight help define its larger-SUV operating profile.