Mercedes-Benz GLC-Class Complaints

782 consumer complaints on file.

#11645213February 27, 2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I am experiencing auto braking when there are no obstructions near or around the vehicle. The auto braking is random but occurs fairly often. It is very unsettling and makes me very nervous while driving my brand new vehicle. This happens without warning and can definitely put myself and my passengers as well as passengers in the vehicles around me at great risks of collisions.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11644659February 24, 2025
FORWARD COLLISION AVOIDANCE
The contact owns a 2023 Mercedes-Benz GLC 300. The contact stated while driving on an access road at 35 MPH, the brake pedal was not depressed; however, the vehicle came to an immediate stop. There were no warning lights illuminated. The contact restarted the vehicle and was able to continue driving normally. The local dealer was contacted and sent a tow truck to pick up the vehicle from the residence for diagnostic testing. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 12,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642730February 14, 2025
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
The contact owns a 2019 Mercedes-Benz GLC350E. The contact stated while attempting to reverse, the rearview camera failed to display an image. No warning lights were illuminated. The contact stated that the dealer was contacted. The vehicle was taken to a dealer where it was diagnosed and determined that the backover prevention software needed to be updated. The vehicle was not repaired. The VIN was not included in NHTSA Campaign Number: 22V232000 (BACK OVER PREVENTION). The manufacturer was notified of the failure and informed the contact that the vehicle needed to be diagnosed before a case could be filed. The failure mileage was 76,954.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642102February 12, 2025
UNKNOWN OR OTHER
PCV valve failure preventing SMOG with 27,000 miles. Extended warranty provided with P052E71 code but not with P1D0313 code which is a related problem. Contacted Mercedes, and stated the problem and description per in extended warranty, it is related to problem which is a partial pcv valve. Please help to update. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11641925February 11, 2025
UNKNOWN OR OTHER, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
While slowly backing out of the driveway and without contacting anything at all, the rear window completely shattered. The window has never been hit by anything and had no defects yet it completely shattered so clearly reflects a manufacturing defect of some sort that is incredibly dangerous to passengers or other vehicles, since it happens without warning and without the necessity of an impact of any kind.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11641513February 8, 2025
POWER TRAIN
The component that failed was the right front differential. My safety and the safety of others was put at high risk as I was driving at 60 mph on the highway and my vehicle suddenly and abruptly reduced speed to about 15mph without any warning. This created an extremely dangerous and potentially hazardous situation as I tried to maneuver my car at this very low speed on the highway in the middle lane safely to the side of the highway. Cars around me quickly maneuvered around me in attempts to avoid my slow moving vehicle and not hit me. The entire experience was terrifying, especially given that the car gave no prior indication of a malfunction. The vehicle had to be towed to Mercedes. I have no real answers from Mercedes as to the cause or why the vehicle did not notify me or why the service light did not go on. The vehicle only had 51,000 miles and is well taken care of. Because the car was out of warranty they refused to cover the expense. I called and sent letters to corporate and received $2500 towards a $6000 bill. I feel this was a safety issue and my car shut down without any type of warning and Mercedes should cover all repair costs. The car has been repaired, but I am still nervous to drive it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11640706February 4, 2025
ENGINE
The check engine light illuminated, I took the car to the dealer I bought. They said the cylinder head on the engine needs to be replaced, when I check the internet it seems it is a known issue for Mercedes X253 but there is not a recall program. I bought the car from the dealer, and put on 5k miles in a year.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11639177January 28, 2025
VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2022 Mercedes-Benz GLC300. The contact stated that while driving at 65 MPH, the sunroof exploded. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 56,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11637735January 22, 2025
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while operating the vehicle, the fuel gauge provided incorrect information and indicated that there was no fuel in the fuel tank. The contact stated that the failure was intermittent and sometimes occurred immediately after refueling. The vehicle was taken to the local dealer who diagnosed the vehicle and determined that the fuel tank needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 55,000. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11635857January 14, 2025
ELECTRICAL SYSTEM:ADAS, ELECTRICAL SYSTEM:ADAS:CONTROL MODULE, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
See attached document for complaint.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11635618January 13, 2025
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM), ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
The contact owns a 2016 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the check engine warning illuminated. The contact stated that the vehicle was taken to the Emissions Center, and the vehicle failed the Emissions test. The vehicle was taken to the dealer to be diagnosed. The dealer retrieved DTC: P052E (PCM has detected an inappropriate degree of pressure from the crankcase pressure sensor). The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11635665January 13, 2025
ENGINE
Car was running rough so I took it to the mercedes benz dealer they diagnosed the problem as cylinder 1 misfire and and cylinder head needed to to be replaced which I did $5500 dollars later this is a common problem and Mercedex Benz needs to recall the engine and reimburse me
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11635429January 11, 2025
POWER TRAIN, ENGINE, ELECTRICAL SYSTEM
when ve give gas padle want go above 20 mph and check engin light is on and car shake bad
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11635080January 9, 2025
STEERING
The contact owns a 2018 Mercedes Benz GLC 300. The contact stated while attempting to park, a loud clanking noise was coming from the steering wheel as the air bag warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the clock spring in the steering wheel which caused the steering wheel to fail and the steering module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The approximate failure mileage was 62,700
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11633770January 2, 2025
FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL, ELECTRICAL SYSTEM
Safety was at risk when the gears switched to neutral while I was driving in car with my children. A recall was completed when bought car was not aware of fuel pumps recall issue. Says completed repair but the car is still having issues and was sold to me without telling me about the recall. First appeared about a week ago. Making a ticking noise, losing power when accelerating.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632530December 26, 2024
POWER TRAIN
Vehicle experienced transmission shifting issue after having driven for a period of 15 - 20 minutes, with engine oil temp reaching above 103/105 degrees C, transmission won't shift into Drive. Automatically pops into Neutral. Other times engine will stall, required complete restart. This creates hazard for operator and cars following behind as driver needed to steer vehicle out of the way of traffic while in Neutral. Independent MB repair shop and dealership scanned vehicle and identified with code P073E code. Dealer upgraded TCM control module software, and wanted to replace valve body in hope of remedy the problem. They were not 100% certain problem will be fixed. Independent repair shop indicated MB need to issue a recall for this problem, as they have seen many owner faced with the same problem. This is a big safety issue with problem of the transmission control module. Problem can be reproduced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632268December 24, 2024
ELECTRICAL SYSTEM
Mercedes App displays low battery alert. Brought to dealer who stated Mercedes told them (dealer) to inform anyone coming in with this issue to just disregard the alert in the app. Had the battery checked anyway. At the conclusion was told I had to “drive the car longer so the battery would recharge”.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11631581December 19, 2024
ENGINE
I picked up a brand new 2025 Mercedes GLC on [XXX]. On [XXX], I was driving through a tunnel with my [XXX] niece and my wife when I suddenly lost functionality of the gas pedal and the check engine light went on. I was able to hobble it out of the tunnel even though there was a long line of cars behind me. I was able to get the car towed to the dealership. The dealership inspected my car and advised me that there were bubbles in the fuel line which they have been seeing with multiple 2025 GLC models. Mercedes corporate advised the dealership to empty the fuel line and re-fuel it, that a recall was going to be issued, and that Mercedes corporate would be working on a permanent fix via software update to be released in Q1 of 2025. I have tried to reach out to Mercedes corporate but have not had any success. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11631359December 18, 2024
FUEL/PROPULSION SYSTEM
Strong gasoline smell coming from the engine bay every morning at start up. I removed protective plastic lining from the under carriage to identify the issue. I identified a lot of gasoline dripping from the top portion of the engine compartment where the High Pressure Fuel Pump is located. There was no warning or check engine lights that alerted of this issue of a gasoline leak. This is very dangerous as it could cause the vehicle to catch fire.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11631534December 18, 2024
UNKNOWN OR OTHER
Driving short distance home when the bottom of Mercedes GLC 300 caught fire without warning or notification. I was unaware when a good Samaritan screamed out your car is on fire. Pulled over and she helped me out. Seconds later the car exploded into flames and the car was demolished.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0

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