2020 Ford Mustang power train problems
23 owner complaints filed with NHTSA name the power train on the 2020 Ford Mustang — 20% of all complaints for this model year.
What owners report
“The 10-speed automatic transmission on my 2020 Mustang failed internally at approximately 18,073 miles. The vehicle began shifting harshly at low speeds with an intermittent clunk. While driving, the transmission would slip slightly and then either surge forward or hesitate with a dull thud before…”
filed Aug 3, 2026
“My car has always been a little rough on shifting since around 40k miles when I got it. I never really noticed after awhile and never had any problems. No lights flashing or codes no issues with anything under the hood. The other day my trans light popped on, but nothing was wrong the car was still…”
filed May 21, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Powertrain Control Module (PCM) may broadcast an unintended faulted signal to the modules…Campaign 22V382000 · May 27, 2022
Related service bulletins
This bulletin supersedes TSB 26-2059. Reason For Update: To add missing labor operations. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: - No upshift past…
TSB 26-2112 · Service Bulletin/Repair Instructions · issued Mar 18, 2026
Power Train problems in other Mustang years
| Year | Reports | Share |
|---|---|---|
| 2024 Mustang | 7 | 10% |
| 2022 Mustang | 4 | 8% |
| 2021 Mustang | 9 | 16% |
| 2019 Mustang | 26 | 18% |
| 2018 Mustang | 45 | 24% |
| 2017 Mustang | 22 | 8% |
| 2016 Mustang | 29 | 8% |
| 2015 Mustang | 42 | 10% |
| 2014 Mustang | 30 | 8% |
| 2013 Mustang | 48 | 18% |
| 2012 Mustang | 177 | 38% |
| 2011 Mustang | 200 | 43% |
Other reported problem areas on the 2020 Ford Mustang
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.