complaints.title

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6 complaints
MERCEDES-BENZ GLS 450 4MATIC 2025 SERVICE BRAKES
low
Brake pads completely worn after 11K miles - this seems like premature wear and like there is a potential issue with the braking system on the GLS450.
NHTSAUSMay 2026Source →
MERCEDES-BENZ GLS 450 4MATIC 2025 FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
high
Accident report: Local ID [XXX] Agency: ISPLowell 13 Date [XXX] Time approx [XXX] Milepost [XXX] on [XXX] Auto: 2025 Mercedes GLS 450 fully loaded Single car accident See attached pictures for damage
NHTSAUSMar 2026Source →
MERCEDES-BENZ GLS 450 4MATIC 2025 SUSPENSION
medium
I am writing to file a formal complaint regarding a serious malfunction of the Automatic Emergency Braking (AEB) system. This malfunction caused my vehicle to unexpectedly perform an emergency stop w
NHTSAUSDec 2025Source →
MERCEDES-BENZ GLS 450 4MATIC 2025 STRUCTURE:BODY:ROOF AND PILLARS
high
The contact owns a 2025 Mercedes-Benz GLS450. The contact stated that while driving approximately 50 MPH, a loud popping noise had occurred, and suddenly the panoramic glass sunroof exploded, causing
NHTSAUSNov 2025Source →
MERCEDES-BENZ GLS 450 4MATIC 2025 ELECTRICAL SYSTEM
medium
The contact owns a 2025 Mercedes-Benz GLS450 4Matic. The contact stated that while driving at various speeds, a safety feature with a white speed limit sign started flashing on the instrument cluster.
NHTSAUSNov 2025Source →
MERCEDES-BENZ GLS 450 4MATIC 2025 ENGINE AND ENGINE COOLING
medium
The contact owns a 2025 Mercedes-Benz GLS450 4Matic. The contact stated that while driving at an undisclosed speed, the engine overheated, with several unknown warning lights illuminated. The vehicle
NHTSAUSOct 2025Source →