Mercedes-Benz GLS450 4matic
Mercedes-Benz GLS450 4matic
91
11 complaints
status.verdict
status.certified
status.certified_sub
product.verdict_certified
product.specifications
specs.g_fuel_economy
specs.city_mpg19
specs.highway_mpg24
specs.combined_mpg21
specs.annual_fuel_cost$3900
specs.ghg_score4 / 10
specs.g_engine_drivetrain
specs.engine_size3 L
specs.cylinders6
specs.fuel_typePremium
specs.transmissionAutomatic 9-spd
specs.drivetrainAll-Wheel Drive
CO₂428 g/mi
specs.g_classification
specs.vehicle_classStandard Sport Utility Vehicle 4×4
specs.typeHybrid

specs.data_sourced_from FuelEconomy.gov (specs.energy_dept)

product.complaints_section11 total
MERCEDES-BENZ GLS 450 2024 UNKNOWN OR OTHER
high
[XXX] girl went in back passenger door (rear facing car seat present), crouched under seat area to climb to middle seat when [XXX] brother push button and seat moved forward without stopping crushing [XXX] old head between back of seat and back of Car seat. There was no safety stop, was stuck mother has to press button to move seat back to release head. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSAUSJun 2026Source →
MERCEDES-BENZ GLS 450 2024 UNKNOWN OR OTHER
low
The panoramic sunroof spontaneously shattered. I was driving on highway under open sky and the sun roof just imploded and all the glass came shattering inside all over. There were no extreme weather or any construction or chances of any debris from anything around. No impact object could be identified upon inspection after the car was stopped.
NHTSAUSApr 2026Source →
MERCEDES-BENZ GLS 450 2024 WHEELS
high
During interstate travel in rainy conditions, the vehicle appeared to lose traction and hydroplane. The tires appeared to have adequate remaining tread; however, they did not provide expected traction and the vehicle felt as though it was driving on ice. This was inconsistent with my prior experience operating the vehicle for over a year in various weather conditions without encountering similar issues. The Electronic Stability Program (ESP), traction control system, and 4MATIC all-wheel drive system did not appear to intervene to stabilize the vehicle. The vehicle spun and was involved in a crash. Despite the impact, no airbags deployed. The vehicle was rendered undrivable and towed from the scene. It is currently located at a collision repair facility and is available for inspection upon request. The suspected systems involved include the Electronic Stability Program (ESP), traction control system (TCS), 4MATIC all-wheel drive system, and Supplemental Restraint System (SRS/airbags). The vehicle has not yet undergone a full manufacturer engineering inspection, but such a review has been requested. The loss of traction at interstate speed in wet conditions created a serious safety risk to the occupants of the vehicle and surrounding motorists. The apparent lack of stability control intervention and the absence of airbag deployment increased the potential risk of injury. The vehicle was inspected by law enforcement at the scene, towed, and has been reviewed by insurance representatives as part of a claim. A manufacturer inspection is pending based on a defective claim that was filed. There were no warning lights, alerts, or messages related to traction control, stability control, or airbags prior to the incident.
NHTSAUSFeb 2026Source →
MERCEDES-BENZ GLS 450 2024 FORWARD COLLISION AVOIDANCE: WARNINGS
high
The 2024 Mercedes-Benz GLS 450 exhibits a critical "Spatial Mapping Offset" defect within the MBUX 360-degree camera interface and the Active Brake Assist (ABA) logic. Specifically, the digital rendering of physical obstacles on the dashboard display is offset by approximately 0.5 feet (6 inches). This creates a "false clear" condition where the driver is visually signaled that an obstacle has been cleared while the vehicle’s chassis is still in a strike position. On September 27, 2025, this defect resulted in a collision with a stationary post. Despite the system’s Parking Control Module identifying the object (recorded as "Orange/Indented" in dealer Repair Order #731706), the system failed to escalate to a Red Triangle alert or initiate autonomous braking. Furthermore, the vehicle’s sensing suite is demonstrably unstable, exhibiting "Phantom Alerts" (detecting non-existent obstacles) and total Augmented Reality (AR) camera blackouts in direct sunlight—a failure the manufacturer’s representative attributed to solar interference. The manufacturer (MBUSA) has formally denied a defect exists, claiming the system is not designed to detect stationary objects or operate below 4 mph. However, I have documented video/photographic evidence of the vehicle successfully intervening for stationary objects at these speeds in other scenarios (e.g., concrete garage posts). This proves the system's safety protocols are intermittent and unreliable. This lack of synchronization between real-time spatial data and the driver interface makes a collision mathematically inevitable and constitutes a significant public safety hazard.
NHTSAUSSept 2025Source →
MERCEDES-BENZ GLS 450 2024 UNKNOWN OR OTHER
low
i've purchased brand new 2024 gls 450 mercedes benz and this is the 3rd times i have to bring my car to the mercedes facility to add a quarter of oil and jerky shifting so i dont feel safety and comfortable to drive this car anymore. i need help or my money back, what do i need to do?.
NHTSAUSJul 2025Source →
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status.uncertainstatus.certified31 May 2026
Lemon Score: 97. 2 data points. v3 scoring.
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