2015 Mercedes-Benz GLS (X166) Dimensions, Size & Specs

The curb weight of the Mercedes-Benz GLS (X166) varies between 2360 kg (5205 lbs) and 2505 kg (5523 lbs), depending on the variant and equipment. The maximum permissible weight, which includes passengers, cargo, and fuel, ranges from 3250 kg (7165 lbs) to 3290 kg (7252 lbs). This weight range is typical for large luxury SUVs with advanced safety and luxury features.

The Mercedes-Benz GLS (X166) provides a generous luggage capacity of 680 liters (24 cubic feet) with all rear seats in place. When the rear seats are folded down, the luggage capacity expands significantly to 2300 liters (81.2 cubic feet). This flexibility makes the GLS a practical choice for families and travelers requiring substantial cargo space.

With mirrors opened, the Mercedes-Benz GLS (X166) width extends to 2141 mm (84.25 inches). This measurement is crucial for assessing whether the SUV can fit comfortably in tight parking spaces, narrow roads, or garages. The wider stance with mirrors is something drivers should be mindful of to avoid damage in confined areas.

Fitting the Mercedes-Benz GLS (X166) into a standard residential garage depends on the garage dimensions. Typical single garage doors measure around 2400 mm (94.5 inches) wide and 2100-2200 mm (82.7-86.6 inches) high. With a width of 1934 mm (76.14 inches) excluding mirrors, it generally fits width-wise. However, opening mirrors, which add to the SUV’s width (2141 mm/84.25 inches), may require folding them in. The vehicle’s height of 1850 mm (72.83 inches) typically doesn't pose an issue, but users should check their specific garage height to ensure clearance.

Compared to its predecessor, the Mercedes-Benz GL-Class (X164), the GLS (X166) is slightly larger and more refined. The X166 measures 5130 mm in length, offering a marginal increase over the previous generation, which was approximately 5095 mm long. Width and height have also seen modest increments, enhancing interior space and road presence. The redesign focused on improved aerodynamics and luxury, while maintaining the generous size expected from a flagship SUV.

The GLS (X166) is competitively sized within the full-size luxury SUV segment. For example, it is comparable in length and width to competitors like the BMW X7 and Audi Q7, which also offer lengths around 5.1 meters and widths close to 2 meters without mirrors. The GLS tends to be slightly taller than some rivals, contributing to a commanding driving position. Its extensive cargo capacity and spacious interior make it a benchmark in its class.

The Mercedes-Benz GLS (X166) comes equipped with a range of tire and rim sizes to balance comfort, performance, and aesthetics. Rim sizes include 18, 19, and 21 inches, with common tire sizes being 265/60 R18, 275/55 R19, and 295/40 ZR21. Larger rims like 21-inch enhance sporty handling and visual appeal but may reduce ride comfort slightly. The 18-inch rims with higher-profile tires offer smoother rides and better cushioning over rough roads.

The roof load capacity of the Mercedes-Benz GLS (X166) is rated at 100 kg (220 lbs). This figure indicates the maximum allowable weight for roof-mounted accessories such as racks, carriers, or boxes. Keeping within this limit is crucial to maintain vehicle safety, avoid damage to the roof structure, and preserve optimal driving dynamics. It ensures the vehicle's center of gravity isn't adversely affected by excessive roof loads.

Standing at 1850 mm (72.83 inches) tall, the Mercedes-Benz GLS (X166) has a relatively high profile typical of full-size SUVs. While this height provides excellent visibility and interior headroom, it also means drivers should be mindful when entering low-clearance areas such as parking garages or underground lots. It is advisable to verify clearance heights where you park regularly to avoid potential damage.