SUV, gasoline, AWD/All-Wheel Drive, built in United States. Owner complaints on file from Aug 29, 2022 to Sep 14, 2026.
Owner complaints about this model year, by the year they were filed with NHTSA.
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 24V-207 | Mar 15, 2024 | 48-Volt ground connection under the passenger seat may not be secured properly, resulting in the ground connection overheating | Electrical system | 116,020 | Repair or modification |
| 24V-118 | Feb 16, 2024 | Transmission may not fully downshift in certain conditions, causing the engine to stall | Powertrain | 105,071 | Software update |
| 23V-880 | Dec 21, 2023 | Fuel pump may shutdown, causing a loss of drive power | Fuel system | 79,676 | Part replacement |
| 23V-445 | Jun 26, 2023 | Fuel pump may shutdown, which can result in a loss of drive power | Fuel system | 143,551 | Part replacement |
| 23V-178 | Mar 17, 2023 | Rear door window trim bars may detach from the vehicle while driving | Structure | 70,225 | Repair or modification |
| 22V-936 | Dec 16, 2022 | Steering coupling locking screw may loosen and possibly detach from the steering gear, resulting in a loss of steering control | Steering | 69 | Part replacement |
| 22V-732 | Sep 30, 2022 | Due to a manufacturing error, the locks on the third-row seatbacks may fail in the event of a crash | Seats | 59,574 | Part replacement |
| 22V-680 | Sep 12, 2022 | Due to a manufacturing error, the rear door window trim bars may detach | Structure | 161,000 | Repair or modification |
| 22V-365 | May 20, 2022 | Error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system | Communication | 242,722 | Software update |
| 22V-231 | Apr 8, 2022 | Ground cable bolt for the 48V ground connection under the front passenger seat may not be secured properly, which can cause the electrical cable… | Electrical system | 21,306 | Repair or modification |
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
15 complaints on file, page 1 of 1.
I am writing to formally log an urgent Safety-Critical Incident Report regarding a complete brake system failure on my 2022 Mercedes-Benz GLS450 (VIN: [XXX]). Incident Details: Date & Time：［XXX］ Vehicle Mileage: Approximate 30k miles Occupants: 5 family members (including 3 children) Maintenance History: Fully and regularly maintained according to manufacturer schedules. What Happened: While driving with my family on the highway, the brake pedal suddenly went completely soft and lost braking power, creating an extremely dangerous, life-threatening situation. The dashboard did not display any advance warning before the failure occurred. Fortunately, I was able to safely coast the vehicle to the shoulder using emergency deceleration. Inspection under the vehicle indicated a severe brake fluid leak/hydraulic pressure loss. The vehicle had to be towed directly to an authorized dealership Enterprise Motorcar [XXX] Our Demands & Requests: As a 2022 model with low mileage and proper maintenance, a sudden failure of a fundamental safety component like the hydraulic braking system—without prior sensor warning—is completely unacceptable and points to potential manufacturing or material defect. I request MBUSA to take the following actions immediately: Open a Formal Safety Case: Assign a dedicated Case Manager to investigate this failure. Comprehensive Diagnostic Report: Coordinate with the dealership to conduct a full root-cause analysis on why the hydraulic line/system ruptured and why no warning light was triggered beforehand. Full Warranty / Defect Coverage: Ensure all repair costs, parts replacements, and associated towing expenses are 100% covered by Mercedes-Benz. Loaner Vehicle / Mobility Support: Provide a comparable loaner vehicle for our family while our vehicle is under inspection and repair. Please confirm receipt of this email and provide me with a MBUSA Safety Case Number at your earliest convenience. Sincerely INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C
NHTSA complaint 11763973I have been receiving errors that visibility is reduced. Lane departure system is not working and car has brake suddenly in moderate traffic despite not being close to vehicle ahead of me.
NHTSA complaint 11738195The contact owns a 2022 Mercedes-Benz GLS450. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the roof of the vehicle. The vehicle was pulled over to the shoulder lane and the contact discovered that the sunroof glass had shattered. No warning lights were illuminated. A dealer was contacted, and the dealer suggested that the insurance provider be contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 50,000.
NHTSA complaint 11731633Car has been auto braking even though there is nothing in front of the car. This is extremely dangerous and could lead to serious rear end collisions. There are many similar complaints on online forums and Mercedes (and their lawyers) do nothing. Link to video: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint 11724974The vehicle caught fire while parked and running in the driveway of my home. There were no modifications, no accident, and no external cause. The fire occurred without warning and posed a serious safety risk to occupants and property. The vehicle was under manufacturer warranty at the time of the incident. The fire caused damages to my house too. There were no warning lamps or messages. Benz has not done an investigation yet.
NHTSA complaint 11711487The car has on 5+ occasions had the collision avoidance system shut down (photos of dash showing this are available and have been shared with the dealer). There were no weather incident at the time. Lane following........ same type of thing also shared with dealer. Most disturbing is on multiple occasions, with the speed control engaged driving on the interstate at 65 to 70 mph, the speed limit indicator on the dash changed to 40 (no speed limit change) and the car went into hard breaking mode until I disengaged the system. (also reported to dealer) Each time the car went into the shop, they "checked the systems" and found no faults and made no repair except on one occasion, they "flashed" the software. The car went into the dealer with 67,000 miles on June 3, 2025 with a promise that they would get to the bottom of this issue. The car was returned after a full "testing" and for good measure, one software update and the replacement of a forward facing camera lens. For each item submitted, they reported no history of any faults and found nothing wrong with the car. The car was returned [XXX] at [XXX]. On [XXX] going 60 mph in traffic, the speed limit indicator jumped to 80 mph and the car immediately and rapidly accelerated until I shut the system down. I took a photo of the dash showing the 80 MPH indication. There are NO locations in Virginia that have an 80 mph speed limit. Also, on several occasions, an alert comes up the the car has been in an accident..... when parked in my garage and a bogus date. Other software glitches happen on a periodic basis INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint 11665997Vehicle lost power while driving on a busy freeway and came to a complete stop and would not restart resulting in it being struck by a vehicle in the rear. More information available in the collision center pre estimate scan and full estimate.
NHTSA complaint 11632849While backing out of steep driveway, the car computer screen blinked saying "updating" then screen went blank, lost power, I could not brake. We have a row of trees at the back of our driveway that stopped the car ( with damage) or else we would have rolled into our neighbors basement all. Tree limbs poked a hole in bumper, cracked left tail light, and damaged the back hatch. Mercedes is saying User fault. I have been driving for 45 years without a ticket, wreck or causing an accident, and I am not a liar. If this blanking of the computer screen happened on a highway , a whole family could be killed, or caused a MULTI-car accident. I am concerned about OTHERS welfare. sent 8/17/2024
NHTSA complaint 11609145As I approached a red light and removed my foot from the gas pedal to brake, my dashboard displayed several alarming messages: “Active Brake Assist Functions Limited See Owner's Manual,” “Active Blind Spot Assist Inoperative,” “To Deselect P or N Depress Brake and Start Engine,” and “Traction Control Inoperative See Owner's Manual.” Subsequently, all dashboard lights illuminated, the engine turned off, and the car shifted into neutral from drive, preventing me from restarting it. Despite turning on my hazard lights, I was stuck in the middle lane while the light turned green. My husband recorded the event on his phone. Eventually, the car restarted, and we continued to his doctor’s appointment. After the appointment, which lasted approximately 45 minutes, I noticed the check engine light was still on when we got into the car. Despite this, I drove home and then to the dealership, where I explained the situation and showed the video to the service writer. Later that day, our service writer informed me via text that there were “No faults in system that would indicate issue that would cause vehicle stalling” and suggested a transmission update recall might be related. I requested the code for the check engine light but was told “no code stored for check engine light.” Given these circumstances, I have several pressing concerns: My car turned off in the middle of a busy street and wouldn’t restart immediately, creating a hazardous situation. This incident poses a significant safety risk. What if this had occurred on a freeway or my daughters were driving my car? The dealership's assertion that no issues were found is hard to believe given the clear malfunctions and present check engine light. Mercedes-Benz's response has not addressed my concerns about the vehicle's safety. A car should not "just turn off while actively driving." I am not at all comfortable with the dealership’s statement that “sometimes this can just happen.” This should NEVER happen
NHTSA complaint 11592527While driving it goes to neutral by it self
NHTSA complaint 11589530The car radar system apparently had a glitch and locked up the wheels while I was driving 25 mph. Yes, it is available for inspection. We are afraid to drive the car, it is just sitting. The car locked up so suddenly it made the rear wheel come off and rear of car fell to the ground. I was bruised by the seatbelt from the sudden stop. The dealer acted like they were unable to inspect it, I had the car towed there since it is under warranty. They said it had been in an accident. It had not been in an accident. I had to have policemen direct traffic until the tow truck arrived since the car was literally stopped in the middle of the street. We had an independent shop verify the issue and replace the tire and wheel that had fallen off. The car has had multiple warning messages about active brake assist inoperable, engine overheating, etc. The dealer has not been responsive at all. Seems they are trying to dodge responsibility.
NHTSA complaint 11564507I heard a very loud boom. It scared me. The sunroof exploded. I did not see anything in the road or any object flying toward me. Then I heard cracking and the sunroof started falling in above me. Thankfully, the fabric cover kept the glass from falling on me. Otherwise, the glass would have fallen on me. I could see pieces of glass. I pulled over and looked at the glass. I started towards my home and the shattered glass started flying off behind me and towards the car behind me. I did not want it to cause issues for them so I slowed down to about 30 mph so the glass would not continue to crack and fly off behind me and put on my hazard lights. My daughter called within 30 sec to a minute after it happened. She said when I clicked on the phone (through the car speaker) she heard me say a few words and the cracking of the glass. She called at 4:17 on May 24th, 2023. It was a clear sunny day. When my husband looked at the sunroof and noticed the glass coming up as opposed to caving in. So he said something did not fall through it it had to explode. We did call the dealership and they said they did not have an appointment until June 6th. My husband said we would have to clean up and take most of the glass out to be able to drive it. We did that and put cardboard over it so bugs could not get it. There was no damage to any other part of the windshield or car.
NHTSA complaint 11523752Car went into limp mode which causes loss of acceleration on major highway. This same issue of going into limp mode happened August of 2022 when the vehicle has less than 1000 miles. The car has 5750 miles and the temperature gauge showed yellow. Then the the yellow engine light came on and then the car went into limp mode where the engine loses power.
NHTSA complaint 11508960I had been driving the car for about ten minutes when the 48v battery malfunction light came on. Within seconds, another warning appeared that said coolant was too hot, and the acceleration stopped accelerating and then went to a complete stop in the middle of the road. I didn't have time to pull over. It was dark and we were completely stalled. I turned the car off, put my hazards on, and waited a minute. When I restarted the car, it worked fine and I was able to make it home. If this had happened on the interstate, I would not have had time to make it to the side of the road. The car only has 25,000 miles on it.
NHTSA complaint 11507694The contact owns a 2022 Mercedes-Benz GLS450. The contact stated that while his wife was driving approximately 35 MPH, the vehicle lost motive power and stalled. Additionally, the power steering was inoperable. There were several unknown warning lights illuminated; in addition to the check engine warning light being illuminated. The driver was able to pull over safely stop after coasting the vehicle. The vehicle was restarted; however, the check engine warning light remained illuminated. The vehicle was driven to the dealer. The dealer diagnosed the failure with the accelerator pedal, pin connector, and an unknown electrical failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 200. The VIN was not available.
NHTSA complaint 11481726Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.