2021 RAM 2500 engine problems
26 owner complaints filed with NHTSA name the engine on the 2021 RAM 2500 — 24% of all complaints for this model year.
What owners report
“I am writing to formally follow up regarding complaint/case number 97989810 through Dodge and to request that this matter be elevated for a complete technical review concerning my 2021 Ram 2500 6.7L Cummins, VIN [XXX]. Time - Line PRIOR FACTORY-WARRANTY REPAIR The XXX factory-warranty repair is an…”
filed Sep 10, 2026
“Vehicle caught fire while engine was running, vehicle idling. Vehicle is a total loss. Prior NHTSA complaints regarding these vehicles causing fire from electrical components under the hood. Unknown if fire was due to electrical or leaking fuel issues under the hood. Major safety risk to occupants…”
filed Mar 21, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Radiator - engine cooling
114254 · Service Bulletin/Repair Instructions · issued Aug 26, 2026Radiator - engine cooling
114255 · Service Bulletin/Repair Instructions · issued Aug 26, 2026Sensor - turbocharger speed
113744 · Service Bulletin/Repair Instructions · issued Jul 29, 2026
Engine problems in other 2500 years
| Year | Reports | Share |
|---|---|---|
| 2026 2500 | 4 | 17% |
| 2025 2500 | 8 | 13% |
| 2024 2500 | 9 | 16% |
| 2023 2500 | 11 | 23% |
| 2022 2500 | 29 | 16% |
| 2020 2500 | 33 | 20% |
| 2019 2500 | 32 | 17% |
| 2018 2500 | 37 | 1% |
| 2017 2500 | 39 | 6% |
| 2016 2500 | 53 | 21% |
| 2015 2500 | 34 | 16% |
| 2014 2500 | 61 | 18% |
Other reported problem areas on the 2021 RAM 2500
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.