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2021 Mercedes-Benz Glc 300 Problems and Recalls
Owners filed 67 complaints with NHTSA about the 2021 Mercedes-Benz Glc 300, most often about the engine (45% of complaints, typically around 7,000 miles). It is 5th of 11 Glc 300 model years by number of complaints and has 9 recalls.
Most common 2021 Mercedes-Benz Glc 300 problems
Engine
30 complaints · 45%Half of these problems showed up before 7,000 miles.
The contact owns a 2021 Mercedes-Benz glc300. The contact stated while driving at various speeds, the vehicle hesitated to accelerate while the accelerator pedal was depressed. The contact stated there was no warning light illuminated. The vehicle was taken to a local dealer but was not diagnosed or repaired. The…
The contact owns a 2021 mercedes benz glc300. The contact stated while driving approximately 65 MPH, the vehicle lost motive power and failed to accelerate properly while depressing the accelerator pedal. The contact pulled over to the side of the road and turned off the vehicle. After restarting the vehicle, the…
Lights
13 complaints · 19%The contact owns a 2021 Mercedes-Benz glc300. The contact stated that there was condensation inside the front passengerâs side headlight housing after it had rained. The contact then stated that while driving at night, the passengerâs side headlight failed to operate as needed. There was no warning light…
The contact owns a 2021 Mercedes-Benz glc300. The contact stated that the passengerâs side headlight was developing fog, causing the light to be dim. The vehicle was taken to the dealer, who diagnosed the vehicle and determined that the headlight needed to be replaced. The vehicle was not repaired. The contact…
Fuel system
12 complaints · 18%The contact owns a 2021 Mercedes-Benz glc300. The contact stated that while his wife was driving in the rain approximately 35 MPH, the vehicle lost motive power and stalled. The vehicle was able to be restarted. The vehicle was taken to a dealer to be diagnosed. The contact was informed that the cylinder head needed…
Electrical
8 complaints · 12%Other or unspecified
7 complaints · 10%Visibility and wipers
4 complaints · 6%Parts named most often: rearview mirrors/devices.
The contact owns a 2021 Mercedes-Benz glc300. The contact stated that while his spouse was driving approximately 35 MPH, the passengerâs side side-view mirror fractured without impact. The dealer was contacted to schedule an appointment; however, the vehicle had not been taken to the dealer to be diagnosed or…
Driver assistance
4 complaints · 6%Parts named most often: adaptive cruise control, automatic emergency braking, blind spot detection.
The contact owns a 2021 Mercedes-Benz Glc 300. The contact stated while driving 10 MPH, the blind spot assist detection feature failed to function as intended. The contact stated while inspecting the vehicle, the contact confirmed that the blind spot assist feature was enabled. In addition, the failure occurred after…
Transmission
4 complaints · 6%
Complaints are owner reports to NHTSA, not verified defects. One complaint can name several components, so shares add up to more than 100%.
2021 Mercedes-Benz Glc 300 recalls
Lights: headlights
Risk: Incorrectly aimed headlights can reduce the visibility of oncoming traffic, increasing the risk of a crash.
Fix: Dealers will inspect the headlight adjustment and correct it if necessary, free of charge. Owner notification letters were mailed february 23, 2024. Owners may contact mbusa customer service at 1-800-367-6372.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2019-2022 glc 300, 2020 glc 350e, and 2020-2022 amg glc 43 vehicles. The headlights may be incorrectly adjusted too high and create a glare for oncoming traffic. As such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard number 108, "lamps, reflective devices, and associated equipment."
Fuel system: fuel pump
Risk: A loss of drive power can increase the risk of a crash.
Fix: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on june 14, 2024. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2023070012.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2021-2023 c-class, e-class, s-class, cls, sl, gt, glc, gle, gls, and g-class vehicles. Please refer to mbusa's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
Infotainment and connectivity: auto crash notification
Risk: A disabled ecall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Fix: The communication module software will be updated through an over-the-air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed july 8, 2022. Owner notification letters will be mailed in phases, on july 8, 2022, may 17, 2024, july 29, 2024, and september 27, 2024. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's numbers are for this recall is 2022060005 and 2023110006.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2017-2022 cla-class, gla-class, gle-class, gls-class, slc-class, a-class, amg gt-class, c-class, e-class, s-class, sl-class, glc-class, cls-class, glb-class, and g-class vehicles. Please refer to mbusa's recall report for specific vehicle model details. An error in the communication module's sim card software can cause a mobile network connection failure, disabling the emergency call (ecall) system.
Lights: headlights
Risk: Headlight failure can decrease visibility for both the driver and surrounding traffic, increasing the risk of a crash.
Fix: Dealers will inspect and replace the headlight sealing plugs, as necessary, free of charge. Owner notification letters were mailed june 3, 2022. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2022050005.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2021 glc 300, glc 300 4matic, amg glc 63 4matic, amg glc 63 s 4matic, and amg glc 43 4matic vehicles. The electrical connection for the headlights may not be watertight, which can result in headlight failure.
Air bags: side impact
Risk: Air bags and seatbelts that don't function as intended can increase the risk of injury during a crash.
Fix: Dealers will inspect and replace as necessary, the side impact crash sensors, free of charge. Owner notification letters were mailed on september 3, 2021. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2021070032/33.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2021 cls450, amg e53, amg cls53, e350, e450, amg gt43, amg gt53, 2020 s450, s560, g550, amg glc63, 2020-2021 glc300, and amg g63 vehicles. The side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash.
Backup camera: camera
Risk: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
Fix: The multimedia system software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed beginning june 28, 2021. Owners may contact mbusa customer service at 1-800-367-6373. Mbusa's number for this recall is 2021050012.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2019-2021 cla-class, gle/gls-class, a-class, e-class, e-class coupe and convertible, gla/glb-class, glc-class, cls-class, and amg gt-class 4-door coupe vehicles. Please refer to mbusa's recall report for specific vehicle model details. The mbux multimedia system software may cause the display to remain black, or reboot after startup. This could result in the rearview camera image not displaying properly. As such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard (fmvss) number 111, "rear visibility."
Seat belts: pretensioner
Risk: Air bags and seat belts that do not perform properly in a crash can increase the risk of injury.
Fix: Mbusa will notify owners, and dealers will replace the seat position switches, free of charge. Owner letters were mailed may 21, 2021. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2021040016.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2021 c-class, e-class, e-class coupe and convertible, glc, cls, amg gt 4-door coupe and g-class vehicles. Please refer to mbusa's recall report for specific vehicle model details. A faulty electrical contact within the seat position switch may prevent the driver and passenger air bags and seat belt force limiters from properly activating during a crash.
Infotainment and connectivity: auto crash notification
Risk: A disabled ecall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Fix: Mbusa will notify owners, and dealers will inspect the communication module and activate it, if necessary, free of charge. The recall began march 31, 2021. Letters for the owners of the 9 additional vehicles were mailed july 9, 2021. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2021030005.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2017-2019 c300, e300, 2018-2020 cla250, 2020 cls450, amg e53, amg gt53, gle450, 2018 amg e63, amg gta, 2017-2020 gla250, glc300, 2019 glc350, amg glc43, 2017-2018 gle350, 2019 amg glc 43, glc350, gle400, 2017 gls450, s550, c300 cabrio, and 2018-2019 s560 vehicles. On june 18, 2021, an additional 9 vehicles were added, including certain 2021 gla250, glc300, 2018 s450, e400, and 2017 cla250 vehicles. The communication module might have been inadvertently deactivated during a service visit, which could have disabled the emergency call (ecall) function.
Infotainment and connectivity: auto crash notification
Risk: Failure of the ecall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Fix: Mbusa will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began march 12, 2021. Owners may contact mbusa customer service at 1-877-762-8267. Mbusa's number for this recall is 2021020025.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2016 - 2021 cla-class, gla-class, gle-class, gls-class, slc-class, a-class, gt-class, c-class, e-class, s-class, cls-class, sl-class, b-class, glb-class, glc-class, and g-class vehicles. Please refer to the part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (ecall) in the event of a crash.
Recall repairs are free at any franchised dealer. Enter your VIN at nhtsa.gov/recalls to see which recalls are still open on your car.
Questions about the 2021 Mercedes-Benz Glc 300
- What are the most common problems with the 2021 Mercedes-Benz Glc 300?
- By NHTSA owner complaints: engine (30 complaints, typically around 7,000 miles); lights (13 complaints); fuel system (12 complaints).
- How many recalls does the 2021 Mercedes-Benz Glc 300 have?
- 9 recalls listed by NHTSA, the latest from February 2, 2024 (lights). Check your VIN at nhtsa.gov/recalls to see which ones are still open on your car.
- Is the 2021 a bad year for the Mercedes-Benz Glc 300?
- It is 5th of 11 Glc 300 model years by number of complaints, with 67 complaints. Complaint counts are not adjusted for how many cars were sold, so popular years collect more of them, and the newest years have had less time to.