*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Electrical system
I own a 2025 Mercedes-Benz GLC 350e plug-in hybrid. The vehicle experienced a complete loss of both the digital instrument cluster/display in front of the driver and the center MBUX infotainment display. Both screens remained completely black even after the vehicle was started and placed in READY mode. The vehicle was still capable of being driven, but the driver instrument display was completely unavailable. As a result, I could not see critical information normally provided through the instrument cluster, including vehicle speed, warning messages, system status, and other important vehicle information. At the same time, there was recurring static/electrical-type noise coming through the…
Sep 18, 2026Service brakes
My 2025 Mercedes-Benz GLC 350e displayed a â48V battery malfunctionâ warning on or about July 1, 2026, while the vehicle was less than one year old. The vehicle was taken to an authorized Mercedes-Benz dealership and remained there until approximately July 20. Mercedes-Benz USA became involved, and the dealership ultimately stated that the malfunction had been corrected through a software update. The 48V battery was not replaced. I have not received documentation clearly identifying the specific software update, campaign, operation number, underlying failure mechanism, or pre- and post-repair diagnostic results establishing that the reported malfunction was caused and resolved by…
Jul 1, 2026Forward collision avoidance › Automatic emergency braking
The car went from 20 miles an hour and 35 miles an hour (happened 2 times) to a sudden hault like hitting a wall. The first time I had to restart the car. The second car, I had to return it to drive. A big X came up on the dashboard. I have owned the car 17 months. Both issues happened in the last 30 days. Nothing beefore. The car has 4415 miles on it. The dealer (Fletcher Jones) was unable to replicate). There was no warning. They told us it was our problem and we could report it to Mercedes Benz which we will do today.
Aug 21, 2026Vehicle speed controlCrash
The contact owns a 2025 Mercedes-Benz GLC 350E 4Matic. The contact stated that while driving 10 MPH and attempting to park the vehicle, the vehicle unintendedly accelerated. The brake pedal was depressed, but the vehicle failed to respond. The vehicle was uncontrollable and crashed into a fence. The driverâs side mirror, bumper, and door were damaged. The contact stated that the air bags did not deploy. The instrument panel had previously gone black before the crash and the vehicle previously failed to accelerate as needed. There were no injuries sustained. A Police report was filed. The vehicle was taken to the local dealer for two prior software updates. The vehicle was towed to the…
Aug 9, 2026 · 9,000 milesVisibility
The contact owns a 2025 Mercedes-Benz GLC350E 4MATIC. The contact stated that while driving at 68 MPH, the sunroof glass shattered unexpectedly. The contact was able to pull over, and the vehicle was towed to the nearest dealer. The dealer had not yet diagnosed the vehicle. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 17,500.
Jul 13, 2026 · 17,500 milesElectrical system
The contact owns a 2025 Mercedes-Benz GLC350E 4MATIC. The contact stated that the vehicle was repaired under NHTSA Campaign Number: 26V281000 (Electrical System); but the recall repair failed to prevent a failure. The contact stated that while starting the vehicle, the instrument panel display was inoperable. The failure was a recurring failure. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 12,540.
Apr 30, 2026 · 12,540 milesSteering
Suspension exhibits excessive bounce/instability over road irregularities, unsafe on uneven pavement, affects steering control. Car available for inspection. Checked by two authorized dealerships, both closed as "operating as designed" without resolving it. Also inspected by manufacturer's Field Service Engineer, same result. Issue began after a phantom braking event â vehicle braked suddenly and unexpectedly on its own while changing lanes at highway speed, no obstruction present, no driver error â also damaged the steering column, since replaced.
Jan 14, 2026Unknown or other
All screens on dash were black and a clicking sound could be heard I side the vehicle. This has happened four times. Towed vehicle to MB dealer and they did a software update but it keeps happening anyway.
May 4, 2026
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.