2020 Ram 3500 Engine Problems
- Complaints
- 27about this part
- Share
- 23%of 116 total for the year
- Median mileage
- 28,500miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 27 complaints about the engine of the 2020 Ram 3500, 23% of the 116 complaints for this model year. Where a mileage was given, the median is 28,500 miles. 1 of these say a crash was involved and 4 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“We were driving our 2020 Ram 3500 diesel with a 2000-pound truck camper in the bed on a city street attempting to make a right turn through a yield sign when the engine suddenly stopped completely without the ability to restart it. This resulted in sudden loss of acceleration, power steering, and power breaks, leading to a near collision with a large pole and possibly other vehicles in the in the intersection. Although we missed the pole and other vehicles, it was extremely difficult to avoid due to loss of power steering and braking. …”
NHTSA complaint #11415339, filed 2021-05, 30,900 miles“While driving at highway speed a rod came through the engine block. I was fortunate I was able to coast to the shoulder of the highway before coming to a complete stop. I was towing a trailer. The engine gave no indication anything was wrong. The only notable thing was the lost of fuel mileage that begin to decrease earlier in the day. The Ram engineering department is holding up the dealer from repairing the engine. They also have another there with a similar issue. They can't provide a timeframe on when the repair will be done. No rental or loaner vehicle is given. …”
NHTSA complaint #11390442, filed 2021-01, 33,000 miles“I bought my truck in tampa, fl in august with 23k miles truck has 30k now I was driving thanksgiving morning after filling tank off in a trusted gas station that I fill all my 3 trucks 2016, 2018, 2020 Ram 3500. I drove about 35 miles and truck started to decelerate lost power within 2 miles and engine shut down and never started again I took to the arrigo dodge tamarac dealer and after 6 days the mechanic diagnosed that fuel has regular gas in it because they never has seen this to happened before. They said the only was fuel pump explode is that lacks of lubrication. …”
NHTSA complaint #11378173, filed 2020-12, 30,000 miles“The 2019 to 2020 model year Ram 2500 heavy duty equipped with a 6.7l cummins diesel engine has a safety issue that could cause a stall and increase the risk of a crash. The bosch cp4.2 fuel injection pump has a very high rate of sudden failure leading to immediate stoppage on the engine and engine braking system.the pump destroys itself and takes out the rest of the entire fuel system leading to repairs in the $15,000-20,000 usd range. Fca & Ram have attempted to revise the pump in late (july) 2020 to solve the issue but the failures keep occurring. …”
NHTSA complaint #11386681, filed 2021-01, 12,500 miles“The 2019 to 2020 model year Ram 2500 heavy duty equipped with a 6.7l cummins diesel engine has a major safety issue that could cause a stall and increase the risk of a crash. The bosch cp4.2 fuel injection pump has a very high rate of sudden failure leading to immediate stoppage on the engine and engine braking system. The pump destroys itself and takes out the rest of the entire fuel system leading to repairs in the $20,000 usd range. Fca & Ram have attempted to revise the pump in late (july) 2020 to solve the issue but the failures keep occurring. …”
NHTSA complaint #11387099, filed 2021-01, 1,834 milesRelated service bulletins
- 11036754Aug 26, 2026Radiator - engine cooling
- 11036753Aug 26, 2026Radiator - engine cooling
- 11035981Jul 29, 2026Sensor - turbocharger speed
- 11035980Jul 29, 2026Sensor - turbocharger speed
- 11034373Jun 17, 2026BEARING - CRANKSHAFT THRUST and KIT
- 11034337Jun 17, 2026BEARING - CRANKSHAFT THRUST and KIT
- 11032990May 21, 2026Radiator - engine cooling
- 11033001May 19, 2026On Cummins diesel applications that are for 2019 and newer the bpro part 1BP00507AB can on occasions create a check engine light. In these situations, it is recommended to use…
- 11031466Apr 17, 2026Diagnostic Trouble Code (DTC) P2459-00 Particulate Filter Regeneration Too Frequent Setting in the Powertrain Control Module (PCM) or Under Fueling or Over Fueling Condition…
- 11030229Mar 21, 2026Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 3 | 11% |
| 2025 | 3 | 7% |
| 2024 | 6 | 13% |
| 2023 | 3 | 18% |
| 2022 | 23 | 12% |
| 2021 | 10 | 16% |
| 2020 | 27 | 23% |
| 2019 | 22 | 16% |
| 2018 | 15 | 2% |
| 2017 | 28 | 9% |
| 2016 | 21 | 16% |
| 2015 | 28 | 20% |
| 2014 | 29 | 14% |
| 2013 | 27 | 23% |
| 2007 | 1 | 17% |
Other parts of the 2020 Ram 3500
57 complaintsTransmission and drivetrain
12 complaintsElectrical system
9 complaintsBrakes
8 complaintsSteering
7 complaintsWheels
7 complaintsOther or unknown
6 complaintsTires
5 complaintsEngine cooling
4 complaintsBody and structure
4 complaintsVehicle speed control
3 complaintsAir bags
2 complaints
← All problems reported for the 2020 Ram 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology