The seatbelt latch does not fully release when you press the red button. It needs to be wiggled and then it eventually does release. This is an ongoing issue.
The worst 2020 Mercedes-Benz GLC 350 E problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical1
- Engine1
- Seat belts1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical1
- Engine1
- Seat belts1
Recalls 6
Exterior lighting: headlights
- What is wrong
- 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."
- Risk
- Incorrectly aimed headlights can reduce the visibility of oncoming traffic, increasing the risk of a crash.
- Remedy
- 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.
Recall number 24V070000 · Recall details
Power train: automatic transmission
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020 GLC350E4 vehicles. The transmission wiring harness may be routed improperly, allowing it to chafe against the front drive shaft, which can cause loss of drive power.
- Risk
- A loss of drive power can increase the risk of a crash.
- Remedy
- Dealers will inspect and replace the transmission wiring harness, as necessary, free of charge. Owner notification letters were mailed August 26, 2022. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2022080001.
Recall number 22V494000 · Recall details
Back over prevention: display function
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018-2021 CLA-Class, GLE/GLS-Class, A-Class, C-Class, E-Class, E-Class Coupe/Convertible, GLA/GLB-Class, GLC-Class, and CLS-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The rearview camera may not display the rearview image due to a software error. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- Risk
- An inoperable rearview camera display reduces the driver's rear view, increasing the risk of a crash.
- Remedy
- Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed July 15, 2022. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2022060007.
Recall number 22V232000 · Recall details
Back over prevention: sensing system: camera
- What is wrong
- 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."
- Risk
- A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
- Remedy
- 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.
Recall number 21V354000 · Recall details
Steering: electric power assist system
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2020 GLC300, GLC350e, GLC43 AMG, and GLC63 AMG vehicles. The power steering control unit wiring harness may have been damaged during the production process, possibly resulting in a loss of power steering assist or an electrical short-circuit.
- Risk
- A loss of power steering assist can increase the risk of a crash. Additionally, If the wiring harness short-circuits, there is an increased risk of a fire.
- Remedy
- MBUSA will notify owners, and dealers will inspect the wiring harness, and replace it if necessary, free of charge. The recall began December 11, 2020. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2020110012.
Recall number 20V651000 · Recall details
Electrical system: propulsion system: cables
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2020 GLC 350e hybrid electric vehicles. The high-voltage wiring harness shield may not withstand the electrical loads produced under certain driving conditions, possibly causing an electrical malfunction and resulting in a stall.
- Risk
- A vehicle stall can increase the risk of a crash.
- Remedy
- MBUSA will notify owners, and dealers will replace the high-voltage wiring harness, free of charge. The recall began December 11, 2020. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2020110008.
Recall number 20V607000 · Recall details
See all 6 recalls for the 2020 Mercedes-Benz GLC 350 E
Defect investigations
Pedestrian alert sounds
the federal safety agency received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, the federal safety agency opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified the federal safety agency he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by the federal safety agency regarding the subject matter of the petition.
DP22005
Technical service bulletins for the 2020 Mercedes-Benz GLC 350 E 204
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz...
- Fuel/propulsion system
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- Engine
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic...
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Only vehicles with a variable transfer case are affected
- Clanking noise from the area of the speakers in the doors
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic...
- During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time
What 2020 Mercedes-Benz GLC 350 E owners say
Most recent owner complaints, unedited.
This is in reference to a 2020 Mercedes GLC350e Plug-In Hybrid. Sole owner purchased January 2020 with under 4 Thousand miles on the odometer, 3 years extended warranty. Took car only to MB Henderson dealership for service/maintenance performance on the vehicle and nowhere else. Dealership has records. The GLC350e received no recall of any kind. On November 11, 2021, the car coolant alert displayed and instructed to shut engine down, key off of ignition and stop everything -- car was not safe to drive. In contacting MB Henderson, NV dealership, they concurred with the display and asked that the vehicle be towed to their facility for further inspection -- No MB Dealership had the capacity to tow the vehicle to their service facilities. So I called using my own AAA Towing and the dealership received the 2020 GLC350e at their facility. They had it overnight and the next day. After checking everything found they can't reproduce the Coolant warning alert display and said the car was safe to drive. Fast forward to March 8th, 2020 this display resurfaced while driving on Interstate 15 southbound to Los Angeles. Called dealership, and their recommendation was again repeated -- Shut off engine, tow it to the nearest dealership. The locatioin was between Bakers and Barstow, and the nearest MB dealership was in Riverside, CA. This is a desolated area and unsafe to stay or leave the car where it is. With what I learned from the November 12, 2021 service performed by the dealership, they couldn't find anything wrong with the car. I felt it important to get off the freeway and proceed to Barstow and call the Riverside Dealership when I get there. This I did and before reaching Barstow, the car engine started to smoke and the hood bulged up. In seconds the bulge was increasing in size, a sliver of flame appeared. This scared me, so I got out of the car in a hurry, and dialed 911 and the insurance company. The flame got more intense and it was totaled.
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Questions about the 2020 Mercedes-Benz GLC 350 E
Is the 2020 Mercedes-Benz GLC 350 E reliable?
Owners have filed 2 complaints about the 2020 Mercedes-Benz GLC 350 E, close to a typical GLC 350 E model year.
What is the most common problem with the 2020 Mercedes-Benz GLC 350 E?
Electrical system, with 1 complaint. Next is engine (1).
How many recalls does the 2020 Mercedes-Benz GLC 350 E have?
6 recalls, covering exterior lighting, power train and back over prevention.
Was there a recall on the 2020 Mercedes-Benz GLC 350 E electrical?
Yes, 1 recall: 20V607000. Check your VIN to see if your car still needs the free repair.
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