Recall on this auto has not been completed
The worst 2020 Mercedes-Benz SLC 300 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical1
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
Electrical system: software
- What is wrong
- 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.
- 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.
- Remedy
- 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.
Recall number 21V058000 · Recall details
Technical service bulletins for the 2020 Mercedes-Benz SLC 300 82
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- 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
- This document is intended as a pre-case diagnostic reference for transmission related concerns
- Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
What 2020 Mercedes-Benz SLC 300 owners say
Most recent owner complaints, unedited.
Compare the 2020 Mercedes-Benz SLC 300
Other model years
Questions about the 2020 Mercedes-Benz SLC 300
Is the 2020 Mercedes-Benz SLC 300 reliable?
Owners have filed 1 complaint about the 2020 Mercedes-Benz SLC 300, close to a typical SLC 300 model year.
What is the most common problem with the 2020 Mercedes-Benz SLC 300?
Electrical system, with 1 complaint.
How many recalls does the 2020 Mercedes-Benz SLC 300 have?
2 recalls, covering electrical system.
Was there a recall on the 2020 Mercedes-Benz SLC 300 electrical?
Yes, 2 recalls: 22V365000, 21V058000. Check your VIN to see if your car still needs the free repair.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2020 Mercedes-Benz SLC 300?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history