Mercedes-Benz GLC-Class Complaints

782 consumer complaints on file.

#11560725December 18, 2023
STEERING
The contact owns a 2018 Mercedes-Benz GLC300. The contact stated that while driving at various speeds, the steering wheel malfunctioned, and became difficult to turn in either direction. The vehicle was taken to the local dealer who diagnosed that the electronic power steering module was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The approximate failure mileage was 70,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11560511December 17, 2023
STRUCTURE:BODY
What component or system failed or malfunctioned, and is it available for inspection upon request? 2018 Mercedes-Benz GLC 300 Panoramic stationary sunroof between the windshield and sunroof glass panel disbonded while vehicle was in operation and almost caused an accident on the highway. How was your safety or the safety of others put at risk? Exterior panel disbonded while in operation and almost hit vehicles behind and could have caused an accident. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes diagnosis from the dealership that panel was coming loose. Then upon picking up my vehicle, panel disbonded on the highway. Dealer is Mercedes-Benz of Atlanta South. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No inspection only completed by local Dealership. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Excessive wind noise inside the cabin during vehicle operation. In addition, my year, make and model vehicle has already had a recall regarding this issue, however, Mercedes did not identify my vehicle VIN number for this recall and is refusing to repair this safety issue. But the exact issue occurred on my vehicle. The NHTSA campaign numbers for the two recalls are 17V715000 (MBUSA number 2017110009) and a revised campaign in 2021 21V197 (MBUSA number 2021070010), which states “Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2018 GLC300, GLC300 4Matic, and GLC43 AMG vehicles. The fixed panoramic sunroof frontal and side plastic panels may have insufficient bonding, allowing the panels to separate during vehicle operation”. Warning signs for these recalls are “high wind noise inside the cabin” which is EXACTLY what was diagnosed on my vehicle by the dealership. Please contact Mercedes-Benz and require them to re-assess the VIN numbers identified with the recalls.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11560051December 14, 2023
SERVICE BRAKES, ENGINE, UNKNOWN OR OTHER
2020 AMG GLC 43 coupe here in Harrison, NJ. My driving style with this vehicle isn't different in any relevant way versus with past vehicles. There is an acceleration dead spot which is the default occurrence when I am coasting at a low speed and then go to accelerate. Common scenarios are driving toward an intersection and rolling forward as you determine if you are clear to go and then accelerating, or slowing down to let a car in the lane next to you go by so you can then switch lanes and accelerate. I swear, I've almost gotten killed a few times when I had time to go but only if I hustled; depress the accelerator, and nothing happens for a full second. Then I go from having enough time to almost getting hit.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11559715December 12, 2023
POWER TRAIN, ENGINE, FUEL/PROPULSION SYSTEM
This is the 3rd incidence of this issue (July, Oct, Dec), but we have been advised that a software update is not yet available from the manufacturer. In all instances, we were travelling at a normal rate of in-city traffic (30-45 mph) and all of sudden the vehicle will not accelerate above 25 mph regardless of the position of the throttle. My dealer, Mercedes Benz of Tampa, advises that the problem can only be corrected permanently with a "software update" which is not yet available. This is a major safety issue, especially on the highway, as the vehicle could suddenly and unexpectedly be unable to accelerate, in fact, decelerates at random times without warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11559480December 11, 2023
STRUCTURE, STRUCTURE:BODY
The contact owns a 2019 Mercedes-Benz GLC350. The contact stated that while being serviced the mechanic observed two cracks in the middle of the sunroof panel. The contact stated that he believes the cracks are associated with NHTSA Campaign Number: 21V197 (Structure). The vehicle was taken to a dealer where it was diagnosed that the sunroof panel (205-780-00-22-40) needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and he also filed a complaint (03902387). The failure mileage was approximately 40,000. The contact stated the left/passenger side roof drip molding is also cracked. This is a stationary panel that is part of the panoramic sunroof assembly.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11558908December 7, 2023
FUEL SYSTEM, GASOLINE
The contact owns a 2021 Mercedes-Benz GLC300. The contact received notification of NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11558704December 6, 2023
FUEL SYSTEM, GASOLINE
The contact owned a 2022 Mercedes-Benz GLC300. The contact stated while driving approximately 30 MPH, the steering wheel lurched to the right direction. The contact stated no warning light was illuminated. The contact stated that the front passenger side of her vehicle crashed into a parked vehicle hitting the left passenger door and tire wheel. The contact stated that the vehicle stopped and the engine stalled. The contact stated she had to kick the driver's side window out to exit the vehicle. The contact later saw that she had bruising on both her thighs and shins, but no other injuries. The police arrived on the scene and had the vehicle towed to an impound lot. The contact had not taken the vehicle to a local dealer or repair center. The vehicle had not been diagnosed or repaired. The contact had received a recall letter from the manufacturer for NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) and related the failure to the recall. The manufacturer was informed of the failure. The failure mileage was unknown.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11558553December 5, 2023
ELECTRICAL SYSTEM
The contact owns a 2020 Mercedes-Benz GLC300. The contact stated that while operating the vehicle, the 12-Volt battery warning light remained illuminated. The contact stated that while driving at various speeds, the vehicle shut off. The failure also occurred while driving on a busy freeway. The vehicle was towed to the local dealer who diagnosed that the STOP/START button was faulty and needed to be replaced. The STOP/START button was replaced but the failure persisted. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 40,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11557612November 30, 2023
UNKNOWN OR OTHER
See attached document for complaint
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11557373November 29, 2023
ENGINE, UNKNOWN OR OTHER
Had the Crankcase valve error, PCV valve, (P052E) trigger engine problem several times at 58.000 miles mark. The dealer says its a $2000 repair and not covered under warranty. The crankcase valve affects emission controls to not perform properly. It should be covered under NJ CCR 2037 up to 70.000 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11557169November 28, 2023
SEAT BELTS
The seat belt latch in the second seating row, the outboard seatbelt latch plate retracted into the area between the c-pillar paneling and the rear side paneling. The rear occupant was not be able to fasten the seat belt latch. The latch plate retracted behind the panel and the seat belt for the affected rear seat was not be available for fastening. I was able to grab the latch plate with a pliers and bring it out from behind the panel but I am afraid this situation will occur again. I checked my VIN against you checker and it says NO RECALL is pending. I assume MB did not include this VIN in its report to you or falsely claimed the vehicle was repaired. reference # 2018030012, May 2018
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11557307November 28, 2023
UNKNOWN OR OTHER
My father was driving home from golf. He was driving for about 5 minutes. He was at a red light and smoke started coming out of the car. He turned car off, then on. Smoke started getting worse. He put on the emergency blinkers, got on the sidewalk, and looked underneath the car. Within a few minutes the car blew up. There were no warning lights and the car was driving normally. Car was brand new and was about 1 year old. 2022 GLC.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11556614November 24, 2023
UNKNOWN OR OTHER
I own a 2016 Mercedes Benz GLC 300 and I’ve noticed that a strong gas smell when I start the car during cold weather. You notice the smell outside and inside the cabin as well as it comes in through the vents.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11556696November 24, 2023
POWER TRAIN
There is a constant acceleration failure where the car does not respond. Again today I was almost in a bad crash due to this. It is a known issue to many owners in Mercedes forums. It happens in any drive mode. Eco comfort sport. Extremely dangerous and the car should be recalled.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11556722November 24, 2023
ENGINE
Cracked piston due to a faulty wrist pin installed in the MBZ M274 engine. Yes, available for inspection. Car began shaking and I would not have been able to control it if I had been driving at a higher speed. Yes, the problem is well known amongst MBZ and the service manager admitted to this engine having resulting cracked pistons. The "check engine" light did not come on until the day after the severe shaking of the vehicle. This should have been a safety recall years ago.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11556012November 20, 2023
ENGINE
The contact owns a 2018 Mercedes-Benz GLC300. The contact stated that while driving 65 MPH, the vehicle started to hesitate while depressing the accelerator pedal. The contact stated that the vehicle also started shaking and vibrating with the check engine warning light illuminated. The contact managed to pull the vehicle off the highway and had the vehicle towed to a dealer. The vehicle remained in the dealer's possession for several weeks before the contact was informed that it was discovered that the piston rings were burned and that the cylinder head was warped. The manufacturer was notified of the failure but had not yet receive a response. The vehicle was not repaired and remained in the possession of the dealer. The failure mileage was approximately 9,200.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11556025November 20, 2023
FUEL SYSTEM, GASOLINE
The contact owns a 2022 Mercedes-Benz GLC43. The contact received notification of NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) 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 and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11555853November 18, 2023
ENGINE, UNKNOWN OR OTHER, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
I m having issue with te code po52e its annoying i fixed and still the same issue
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11555404November 16, 2023
SERVICE BRAKES
After giving a pressure to the brakes, the car feels like the brakes are being slipped towards the end, so I have to hold the brakes hard at the end. I have tried different models of Mercedes such as E class but the brake of E class works exactly opposite from GLC 300. When I give a pressure to E class, first it will stop slowly and towards the end, it will stop more aggressively. When I drive GLC 300 on highway, I had to make several sudden stops because I couldn't estimate the brake range. I made several different people to drive my car, and they felt the same. I have reported to dealer right away, and they are saying it is normal. I even said E class brake system is away different from GLC 300 brake system and they are saying I cannot compare different class cars but have to compare same class cars. I think I have to compare GLC with different class of cars so that I could know the GLC has problem from manufacturing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11555185November 15, 2023
ENGINE
Complete engine failure after 55,000 miles determined that there was a broken piston #1 in the car. This required a complete engine replacement. This is a known problem by Mercedes with the engine model M274 there are numerous reports of the same problem in this engine over several models and years. The engine was 5000 miles out of warranty however this problem seems to occur in alot of vehicles from Mercedes with this engine. There is an active class action lawsuit in California regarding this. Mercedes seems to be ignoring this issue and or not dealing with it to date.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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