This vehicle is unsafe. When driving in traffic the engine/transmission will not deliver power in response to throttle application, it is also inconsistent in it's response from one time to the next. The vehicle will hesitate for up to 4-5 seconds before responding to throttle commands when pulling out into traffic. This is most noticeable while rolling between 5-10 MPH and applying power also while making a sharp turn. The powertrain also is extremely inconsistent in it's response which makes pulling into traffic extremely dangerous. I suspect the problem stems from sensors in the electronic stability program (mb esp), the transmission module and the fly by wire throttle and engine control module. Programing of shifts of the transmission seem to fighting within the transmission itself. All of this adds up to an extremely dangerous situation when driving in traffic. I have taken the vehicle back to the selling dealer (mercedes benz of north palm beach florida) twice only to be told that this is normal. I filed a request with mercedes benz of north america to buy the car back without success.
The worst 2020 Mercedes-Benz AMG Glc63s problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
- Transmission1
Recalls 2
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
Electronic stability control (ESC)
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019-2020 C63 AMG, C63 AMG S, AMG GT 53, AMG GT 63, AMG GT 63 S, and 2020 GLC 63 AMG, GLC 63 AMG S vehicles. An incorrect Electronic Stability Program (ESP) software version may cause the ESP system to react inaccurately. On December 18, 2020, an additional 360 vehicles were added to the recall population.
- Risk
- If the ESP does not react properly to a driving situation, it may increase the risk of a crash.
- Remedy
- MBUSA will notify owners, and dealers will update the ESP software, free of charge. The recall began August 28, 2020. Letters for the owners of the 360 additional vehicles were mailed January 15, 2021. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2020080016.
Recall number 20V395000 · Recall details
Technical service bulletins for the 2020 Mercedes-Benz AMG Glc63s 189
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
- 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
- Noises/ squealing from the service brake in various driving situations and ambient conditions
- During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time
- Tailgate opens unintentionally
What 2020 Mercedes-Benz AMG Glc63s owners say
Most recent owner complaints, unedited.
Compare the 2020 Mercedes-Benz AMG Glc63s
Other model years
2020
Questions about the 2020 Mercedes-Benz AMG Glc63s
Is the 2020 Mercedes-Benz AMG Glc63s reliable?
Owners have filed 1 complaint about the 2020 Mercedes-Benz AMG Glc63s, close to a typical AMG Glc63s model year.
What is the most common problem with the 2020 Mercedes-Benz AMG Glc63s?
Engine and cooling, with 1 complaint. Next is transmission (1).
How many recalls does the 2020 Mercedes-Benz AMG Glc63s have?
2 recalls, covering back over prevention and electronic stability control (esc).
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