Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Ram 2500 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2020 Ram 2500. The contact stated that after starting the engine, moments later the contact came back to discover fire coming from under the hood of the vehicle. The contact and co-workers used fire extinguishers to extinguish the flames. The vehicle was later towed away. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure but no assistance was offered. The failure mileage was 67,000.
The contact owns a 2020 Ram 2500. The contact stated while driving 35-40 MPH, the vehicle started shuddering and he heard abnormal knocking sounds coming from the engine. Additionally, the contact stated that the vehicle seemed to be at risk of a rollover. There was no warning light illuminated. The contact depressed the brake pedal and continued driving 20 MPH. The contact veered to the side of the road. The check engine warning light was illuminated. The contact drove the vehicle to the local dealer at a slower speed. The vehicle was not diagnosed or repaired. The contact became aware that the VIN was included in NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) which he associated with the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 24,000.
While driving up snow covered inclined driveway. Truck started to spin and stopped going forward. Starting to slide backwards the engine shut off and I lost power steering and power brakes. Managed to re-start while sliding backwards but the engine shut off again resulting in a sideways crash into a tree. Thus causing $5000.00 truck damage but no bodily injury. My insurance covers damage but I am out a $500.00 deductible. The engine shutting off happened the year before but I was able to stop the slide in time. I just received a recall ("Z20/NHTSA 22-140") and I'm not sure if that problem is a cause of my incident. I did not notice any warning indications during or before the incident. I have not contacted FCA or my dealer yet.
The contact owns a 2020 RAM 2500. The contact stated while driving at an undisclosed speed, the contact noticed that the engine was running unusually rough and the engine seized. No warning lights were illuminated. The vehicle was towed to an independent mechanic where it was diagnosed with a failed engine. The contact was informed that the heater intake bolt was detached and entered into the number 6 cylinder. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the failure was a known failure regarding the vehicle. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 150,128.
The contact owns a 2022 Ram 2500. The contact stated that the vehicle was not properly aligned, and the tires were worn. The dashboard leather had detached. While driving at an undisclosed speed, the windshield wipers became inoperable. Additionally, after it had rained, the contact noticed there was water moving around in the engine bay. There were no warning lights illuminated. The contact completed an alignment. The vehicle was taken to the local, who broke an unknown part on the dashboard. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 10,000.
The contact owns a 2020 Ram 2500. The contact stated the check engine warning light was illuminated. The vehicle was taken to a dealer where the ECU system was reset. The contact received notification of NHTSA Campaign Number: 22V835000 (Power Train) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was approximately 17,500.
The contact owns a 2020 Ram 2500. The contact stated that while driving approximately 65 MPH, there was a knocking noise coming from the engine compartment, with the check engine warning light illuminated. The vehicle was taken to the local dealer to be diagnosed. The contact was informed that engine grid heater had overheated, causing damages to the engine. The engine was replaced, and the vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 300,000.
The contact owns a 2020 Ram 2500. The contact stated that while driving the vehicle at an undisclosed speed, a tapping sound was heard, which gradually grew louder. The next day, the vehicle was taken to a dealer where it was diagnosed with a piston 5 failure, and the dealer determined that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 46,000.
I was driving my truck on 10/26 approximately 9 am when the engine made a loud knocking noise and then proceed to make a erratic clanking noise. The truck proceeded to completely shut off while driving, rendering me unable to control the vehicle as all systems shut down. There were no warning lights present or any other warning signs. It coasted to a stop on the side of the road. The safety of myself and anyone around me was at high risk as I had no ability to control the vehicle. The vehicle only has 12,000 miles on it so I had it towed to the closest dealership, Autostar of Hendersonville NC. It took a week to get a diagnosis because their solitary diesel tech was on vacation. They offered my no loaner vehicle and FCA has not made an adequate offer to cover the full cost of a loaner vehicle. The diagnosis on the vehicle was a high pressure fuel pump failure. …
My name is [redacted]. I have a 2020 Ram Laramie. I purchased the truck June 2nd 2022. So then, my truck did not come with a fitting spare tire. Currently I have 40/13.5r17 on the vehicle. That the manufacturer placed with this truck when I purchased it. The spare that came with the truck, is a 18 inch spare. That doesn't fit my truck. Also it's a major safety hazard. My left front tire split on the side so I went to use my spare and it was a wrong tire. Also, I purchase the vehicle with only 17000 miles on it, and No personal owners. Only dealerships. I paid $135,000 cash for it on the spot. Only had it 1 year. Also, now my truck won't start. Something is wrong with my fuel pump and batteries or something. There suppose to come get it today. I live 30 miles up the mountain in WA state. So I do not do a whole turn of driving. …
Engine complaints in other 2500 years
Frequently asked questions
How common are engine problems on the 2020 Ram 2500?
NHTSA has 34 complaints about the engine & cooling of the 2020 Ram 2500, 21% of the model year's 162 complaints.
Is there a recall for 2020 Ram 2500 engine problems?
No. NHTSA lists no engine & cooling recall for the 2020 Ram 2500, though it has 10 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2020 Ram 2500 engine problems start?
Half of the complaints with a recorded mileage happened before about 18,000 miles, and 67% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.