Mercedes-Benz GLS 2023–2026 car dimensions: 5209 mm long, 1956 mm wide and 1823 mm high. Unladen weight is 2,535 kg. Braked towing is 3,500 kg.
The cabin has dual 12.3-inch screens with MBUX, wireless Android Auto and Apple CarPlay as standard. Quad-zone climate control is standard. Cruise control is standard, with adaptive versions in packages on higher trims. Parking sensors and a surround-view camera with reversing view are standard, along with Active Brake Assist for automatic emergency braking and blind-spot warning. Lane keep assist comes in the Driver Assistance package on some grades. The setup makes long trips easier with clear displays and solid basic aids that work without constant input.
Boot space is 355 litres behind the third row. Folding the seats opens up to 2400 litres. Power-folding seats and a hands-free liftgate make loading straightforward for family or larger items.
Braked towing capacity reaches 3500 kg with unbraked at 750 kg. Payload sits around 670 kg depending on specification. Air suspension is standard and helps with load levelling for towing or heavier use.
The cabin is spacious across three rows with supportive multi-way power front seats that include heating and ventilation as standard. Higher grades or packages add multicontour seats with adjustable air bolsters and massage. Four-zone climate is standard, with five-zone available. A large panoramic roof lets in light. Optional acoustic glass and Air Balance keep noise low and air fresh with fragrance. Heated steering wheel, armrests and rear seats appear on select packs. Overall it feels quiet and roomy for long trips.
Mild-hybrid petrol and diesel engines available globally.
US combined fuel use around 16-21 mpg depending on engine.
Service intervals typically yearly or every 10,000-25,000 km/miles by market.
No dedicated Euro NCAP or IIHS rating published for GLS. related GLE scored five stars.
Standard safety includes multiple airbags, AEB, blind-spot monitoring, lane keep, PRE-SAFE and surround cameras.
Basic warranty commonly four years/50,000 miles in US markets.
Fuel use varies by market and engine. US petrol models return roughly 18 city/23 highway mpg for the six-cylinder mild hybrid and lower for the V8. European diesels show combined WLTP figures near 8 l/100 km. Premium fuel is required for petrol versions. Real-world figures depend on load and driving style in this large SUV.
Servicing follows market-specific schedules, often Service A/B alternating every 10,000 miles or annual checks with longer 25,000 km intervals in some regions. Oil changes, filters and brake fluid form the core. Capped-price plans are offered in places like Australia. No free scheduled maintenance is standard in most markets.
Safety kit is extensive and largely standard. It covers active brake assist, attention assist, blind-spot with exit warning, lane-keeping, adaptive high beams, 360-degree cameras and PRE-SAFE systems. Higher packs add advanced DISTRONIC cruise and steering assist. Crash-test data is limited. the platform shares strong results with the related GLE.
Ownership centres on regular dealer servicing to maintain air suspension, mild-hybrid components and electronics. Tyre pressures and fluid levels need routine checks. The vehicle is built for long-distance comfort but running costs reflect its size and luxury positioning.
Length 5209 mm, Width 1956 mm, Height 1823 mm, Wheelbase 3135 mm (GLS 2023–2026)
Sources: manufacturer data, Mercedes-Benz owner's manual, French Mercedes-Benz brochure 14/10/2025, Philippines e-brochure.