There are 9 owner-reported brakes complaints for the 2011 Mercedes-Benz GL-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2011 Mercedes-Benz GL450. The contact stated that while driving at various speeds, the message for brake and traction control failure was intermittently displayed, causing the cruise control to disengage. The vehicle was taken to the dealer and was diagnosed with ha ydraulic control unit failure. The contact was informed that the hydraulic control unit needed to be replaced. The vehicle was not repaired due to the cost. The contact related the failure to two undisclosed recalls; however, the VIN was not under recall. The manufacturer was not notified of the failure. The failure mileage was approximately 120,000.
- The hard brake lines from the going to the rear axle ruptured during light braking. The corroded sections have been removed and are available. - I had no indication of a problem until I went to stop the vehicle. I was able to slow the vehicle down but could not keep it from moving forward with out being in neutral. Had there been another car in front of me or in traffic, I would not of been able to stop. - The problem cannot be reproduced by a dealer, since the corroded and ruptured section of the lines had to be replaced. There has been no inspection of the issue since no accident occurred. - No warning lamps or any indication of a problem until the brake pedal was applied. Pedal was firm then suddenly went to the floor (repeatedly). Only until all the fluid drained from the reservoir did the "brake" light come on.
The contact owns a 2011 Mercedes-Benz GL350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
The contact owned a 2011 Mercedes-Benz GL450. The contact stated that while driving and attempting to make a right turn, the vehicle failed to stop, which led him to rear-end a truck in front. There were no warning lights illuminated. The contact sustained a fracture in the finger, and forehead injury caused by the impact with the steering wheel that required medical attention. The air bags did not deploy. A police report was filed, and the vehicle was deemed destroyed. The contact related the failure to the received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic). The manufacturer was not notified of the failure. The failure mileage was approximately 140,000. The VIN was invalid.
Brakes pipe lines
The contact owns a 2011 Mercedes-Benz GL450. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Brought this vehicle into Mercedes-Benz of Peoria, Peoria, IL. for routine maintenance on May 19, 2022. When I returned to pick up vehicle, I was informed of the Do Not Drive recall and was informed I could not drive my car. I was only offered a curtesy car for that night and then had to find my own rental car, which I have done, incurring $7,675.11 in rental charges through August 2022. I have received zero updates from Mercedes as to when they will fix this problem. I have also not received any reimbursement for my rental car expenses.
The contact owns a 2011 Mercedes-Benz GL350. The contact stated while driving 20 MPH, the brake pedal was depressed but failed to respond and went all the way to the floorboard. The contact then pumped the brake pedal until the vehicle responded. However, there was 20-foot stopping distance delay. The warning message "Brake Fluid Low" was displayed. The contact veered to the side of the road. The contact then noticed a trail of brake fluid on the ground. The contact was able to refill the brake fluid reservoir. The vehicle was taken to an independent mechanic where the brake fit knots, the brake fitting union, and brake fluid line were repaired. The dealer was not notified of the failure. The contact later received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic). The manufacturer was notified of the failure but provided no assistance. The failure mileage was approximately 129,748.
The contact owns a 2011 Mercedes-Benz GL550. The contact received notification of NHTSA Campaign Number: 22V315000 (SERVICE BRAKES, HYDRAULIC). The contact stated that while reversing, the brake pedal was depressed with an abnormal hissing sound coming from the brake pedal. The contact stated that the sound was audible since the vehicle was purchased in 2019. The local dealer was contacted. The manufacturer was made aware of the issue. The contact received a vehicle compliance letter from the manufacturer, which stated that a mobile mechanic could be sent to the residence to inspect the vehicle, and the dealer would offer tow service. However, when the dealer was contacted, the dealer refused to assist the contact with the tow service or a mobile mechanic. The contact stated that the failure persisted. The vehicle remained at the residence and had not been driven due to the failure. The failure mileage was approximately 22,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026