My 2021 Mercedes-Benz AMG GT 43, VIN [XXX] , has had a recurring safety issue with the transmission wiring harness and connector X279. Mercedes-Benz said this connector can let water in, which can cause a short circuit, overheating, and a fire risk while the car is parked and off. That is why the vehicle was covered by recall 24V445 / MBUSA Campaign 2024100002. This same issue was already addressed once before in January 2023 under MBUSA Campaign 2022080010 / the federal safety agency 22V‑533, when the connector was checked and reworked and a bracket was installed. Even after that, the car later had to go back again on November 29, 2024 for the newer recall repair, when the original two-part harness was replaced with a one-part harness. The part that concerns me most is that this is not just a routine repair issue. It is a fire risk that can happen while the vehicle is parked with the ignition off. I am also concerned that the recall and service records do not clearly show the exact completion date in the manufacturer’s system. I am asking the federal safety agency to record this complaint and review the defect history and repair history for this vehicle. I can provide the recall notices, service records, purchase contract, vehicle history report, and the notice I already sent to Mercedes-Benz USA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The worst 2021 Mercedes-Benz AMG GT problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical1
- Transmission1
Problems by type
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- Electrical1
- Transmission1
Recalls 2
Electrical system: software
- What is wrong
- 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.
- 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.
- Remedy
- 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.
Recall number 22V365000 · Recall details
Traction control system
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 AMG GT Black Series vehicles. The wiring harness for the front wheel speed sensor may be the incorrect length, which could result in damage to the harness during certain driving conditions.
- Risk
- A damaged speed sensor wiring harness can impair dynamic control functions, such as stability and traction control, and anti-lock brakes, increasing the risk of a crash.
- Remedy
- Dealers will replace the wiring harness, free of charge. Owner notification letters were mailed March 18, 2022. Owners may contact MBUSA customer service at 1‑800‑367‑6372.
Recall number 22V042000 · Recall details
Technical service bulletins for the 2021 Mercedes-Benz AMG GT 100
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Engine
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- 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
- 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active...
- Check Engine Light ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active...
- Engine
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the...
What 2021 Mercedes-Benz AMG GT owners say
Most recent owner complaints, unedited.
Available for inspection upon request issue was reproduced at dealeship. Issue is easy to identify. Vehicule was inspected by dealership, manufacturer is aware. Fault light on dashboard show a fault icon the 2021 amg gt blackseries have an active rear wing. A part of the active rear wing is active but has a high failure which at some speeds can be dangerous because the active part is not working and do not provide the downforce that it should because of the actator failures. There are a high numbers of replacement requested throught the mercedes network but they are being replaced by the same part # not an updated one to avoid failures. Some owners do not have a replacement due to none in stocks. The 2021 is under warranty but amg mercedes has not , yet, informed owners of the potential hazard. The active part of the rear wing when failed is simply not responsive (not moving according to speeds or braking actions). Please review the issue before someone gets hurt. Thank you
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Questions about the 2021 Mercedes-Benz AMG GT
Is the 2021 Mercedes-Benz AMG GT reliable?
Owners have filed 2 complaints about the 2021 Mercedes-Benz AMG GT, fewer than a typical AMG GT model year.
What is the most common problem with the 2021 Mercedes-Benz AMG GT?
Electrical system, with 1 complaint. Next is transmission (1).
How many recalls does the 2021 Mercedes-Benz AMG GT have?
2 recalls, covering electrical system and traction control system.
Was there a recall on the 2021 Mercedes-Benz AMG GT electrical?
Yes, 1 recall: 22V365000. Check your VIN to see if your car still needs the free repair.
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