SUV, gasoline, AWD/All-Wheel Drive, built in Germany. Owner complaints on file from Sep 28, 2025 to Aug 26, 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 |
|---|---|---|---|---|---|
| 26V-481 | Jul 24, 2026 | Micro-switch in the driver's door lock may corrode and fail to detect an open door, preventing the electronic parking brake or "Auto-Park" feature… | Latches and locks | 310,667 | Part replacement |
| 25V-533 | Aug 20, 2025 | Steering coupling bolt may have been improperly tightened, allowing the steering coupling to loosen from the steering rack | Steering | 3,749 | Repair or modification |
| 25V-379 | Jun 6, 2025 | In certain crash scenarios, where the rear occupant's head contacts the C-pillar, the pillar may not absorb an adequate amount of the impact | Structure | 92,851 | 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.
8 complaints on file, page 1 of 1.
2. Service Department Misconduct —XXX Appointment On XXX, I brought my vehicle to the dealership’s service department for a pre-scheduled and confirmed appointment regarding a safety-related warning involving the emergency brake system. Despite having provided a full description of the issue at the time of booking, I was informed upon arrival that the diagnostic process would take more than five hours. When I asked about a loaner vehicle — standard practice at Mercedes-Benz dealerships in cases of extended service — I was refused, even though five courtesy vehicles were visibly parked on the lot and at least two other customers who arrived after me were provided loaners and expedited service that same day. I was made to wait in the lobby for the entire day. At approximately 5:00 p.m., just before closing, and despite no diagnostic work having been performed on my vehicle, a loaner vehicle was suddenly made available to me. This inconsistent and apparently discriminatory treatment in the allocation of loaner vehicles and service priority is unacceptable and warrants review. 3. Lack of Communication and Missing Documentation Following Service The technician assigned to my vehicle, [XXX], told me he would call me on Monday, XXX, once diagnostics were complete. He did not call. Instead, I received only an automated text message on Tuesday, XXX, stating the vehicle was ready — with no phone call, no email, and no explanation or summary of the work performed, contrary to standard practice at other Mercedes-Benz dealerships I have used. When I called to follow up, the technician did not answer despite multiple voicemails. I called the service department directly and asked for a supervisor; none was made available. After approximately one hour of calling the main dealership line, a sales associate attempted to reach the service department on my behalf and also received no answer. I then reached the technician directly. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint 11759873The vehicle presented multiple warnings/errors before shutting down on the street in traffic on June 23, 2026. Warnings such as Collision Detected, Blind Spot Assist and Exit Warning Inoperative, PRE-SAFE Inoperative, System Failure Detected, Service Required Do Not Shift Gear, along with various lights on the dashboard which includes the Check Engine Light. The vehicle was towed to local Mercedes Benz dealership which reported the issue was with a drive train module that required a software update, the update was performed and vehicle was returned to me on June 25, 2026. On June 28, 2026 the warnings Blind Spot Assist and Exit Warning Inoperative, and PRE-SAFE Inoperative messages returned. Then on July 13, 2026 the vehicle shut down completely again in the same manner and error messages as initially reported. The vehicle was then towed to another dealership who reported seeing the same error messages, however they have not been able to replicate the issue after resetting the software.
NHTSA complaint 11751243The rear lift gate closes unexpectedly when standing behind the vehicle and loading or unloading the cargo area. The keyless soft close activates even though there is no foot movement, or when there is minimal movement. This happens without warning. On several occasions this has happened to me, and also to my wife. It has caused minor bruises, but more importantly we are both older and it has been difficult extricating ourselves and reaching the control to raise the gate again. While there have been no falls yet, it's only a matter of time before someone loses their balance or is hurt in some other way. This has been reviewed by the local dealer's service department who says there is nothing wrong. It has also been discussed with an engineer at Mercedes with no result.
NHTSA complaint 11749171Check engine light (MIL) came on while driving and vehicle lost power. Would not accelerate. Had it towed to Mercedes Benz of Mrytle Beach. $8000 repair. Mercedes Corp would not help. This is a copy of a TSB (LI05.20-P-080257) for this issue: Complaint engine vibrations perceived at low rpm. Fault codes for the camshaft position of the intake camshaft (p001100, p001104, p001200) or exhaust camshaft (p001400, p001404, p001500) may be stored. Cause continuously fluctuating oil pressure in the central valve may lead to damage to the filter screen on the central valve. This can result in damage to the filter screen or the filter screen breaking loose. The resulting loss of oil pressure prevents proper adjustment of the camshaft adjuster. If the filter screen breaks loose, parts of it may settle in the camshaft adjuster or in the camshaft. If there are parts in the camshaft, they can pass through the oil supply bore to the last camshaft bearing (i.E., the first camshaft bearing behind the adjuster) and cause damage there. Remedy 1. In cases in which only the screen of the central valve is damaged and no metal particles are found in the oil filter, the following parts must be replaced: - always both central valves - the camshaft adjuster of the damaged central valve 2. In cases where the screen is completely missing and metal particles are found in the oil filter, the camshaft bearings must be checked. If any damage is visible there, proceed as follows: - both central valves - the camshaft adjuster of the damaged central valve - the camshaft bearing housing (camshafts are already included here) - oil change with oil filter
NHTSA complaint 11741971My 2024 Mercedes-Benz GLC 300 has experienced multiple serious safety-related malfunctions involving several vehicle systems. In August, after picking up the vehicle from service, I placed my [XXX] grandson in his car seat, set my purse with the key inside the vehicle, and closed the rear door. The vehicle immediately locked all doors on its own, trapping my grandson inside in approximately 88-degree temperatures. I was unable to gain access for about 30 minutes. This created a dangerous child safety situation. Key fob periodically will lock you out of car. The following day, while driving approximately 35 mph with my [XXX] grandson in the vehicle, the car suddenly and violently applied the brakes and tightened the seatbelt without warning or any obstacle present. The vehicle came to a complete stop in the roadway. I later experienced bruising and increased neck pain afterward. I have also experienced repeated power liftgate malfunctions. While loading groceries, the liftgate failed to recognize my presence and closed on me unexpectedly, striking my head. The vehicle was brought in for service in November regarding this issue. Additionally, while driving on the highway, both side mirrors have suddenly folded inward without warning on several occasions, causing immediate loss of visibility and creating a serious driving hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint 11736573The contact owns a 2024 Mercedes-Benz GLC 300. The contact stated that while driving at approximately 35 MPH, the brake was applied unexpectedly without the contact depressing the brake pedal. The contact stated that she was unsure if the forward collision system was turned on at that time. The driver's seat belt tightened, and she sustained a bruise on her left arm and soreness on her chest. Medical attention was required. The vehicle was taken to a dealer where they were not able to replicate the failure. On another occasion, while parked, the tailgate was opened as groceries were being loaded into the rear cargo area. The tailgate closed inadvertently and struck the contact's head. The contact sustained head and neck injuries, and medical attention was required. The vehicle was taken to a dealer where the failure was not able to be replicated. The manufacturer was notified of both failures and advised that the automatic tailgate closing feature could be removed from the vehicle. The failure mileage was 31,153
NHTSA complaint 11735615New car was purchased from Rocklin Mercedes in California. Soon after the rear back up camera kept opening and closing when the car was in drive and at random times. The was then taken into Autobahn Motors in Belmont California to have the problem checked. I was told Mercedes was working on a software fix at which time the service tech never wrote up the problem. In 2025 the car again was taken into Mercedes for service at which time I brought up the same issue and was told most newer cars have this problem and there is NO fix, even the loaner they gave me had the same problem.
NHTSA complaint 11716659While carrying my carbon fiber bicycle on a rear hitch mounted bicycle carrier, the vehicle severely and violently applies the brakes and swerves either left or right or both. This catastrophic maneuver has put me and other drivers in a non avoidable highly calamity. This “AUTO” maneuver happens dozens of times in during a fifteen mile trip to local bicycle trails. Dealer replaced the Trailer Recognition Module 9-24-2025. As expected, dangerous situation remains. Happens every opportunity when carrying bicycles. First exhibited after purchase 6-29-2024 to current.
NHTSA complaint 11690219Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.