Which parts fail
Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Ram 1500 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 Ram 1500. While the contact's father was driving at highway speeds, the check engine and throttle body warning lights illuminated and the vehicle started losing motive power; however, the vehicle failed to properly accelerate. The vehicle was taken to the local parts supply store who diagnosed that the throttle body had failed and needed to be replaced. The vehicle was not repaired. The contact stated that later driving on the freeway and attempting to pass a semi, the vehicle failed to properly accelerate and started shaking and vibrating abnormally. The vehicle was later restarted but only operated in "LIMP Mode" and failed to accelerate above 40 MPH. The contact stated that had scanner was used to diagnose the vehicle and retrieved information of high-pressure fuel pump failure. The vehicle was not yet repaired. …
The contact owns a 2015 Ram 1500. The contact stated that an emission recall repair was performed on the vehicle; however, the vehicle would stall or enter Limp Mode and failed to accelerate above 30 MPH. The service electronic throttle warning light and check engine warning light was illuminated. The diesel particulate filter was also illuminated. The vehicle was taken to two different dealers. The contact stated that the manifold gasket, fuel supply, and turbo water feed lines were replaced; however, the failure recurred. The contact stated that the local mechanic performed a force regeneration of the diesel particulate filter. The manufacturer was notified of the failure. The approximate failure mileage was 105,000.
The contact owns a 2015 Ram 1500. The contact stated while driving 70 MPH on the Interstate, the electronic throttle warning light illuminated. The contact pulled over to the right side of the road, turned off and restarted the vehicle, but the failure persisted. The contact stated that the failure had occurred on several occasions. The contact stated that he was an independent mechanic and had diagnosed the vehicle. The contact replaced the throttle body and the accelerator pedal. The vehicle was repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 172,120.
The contact owns a 2015 Ram 1500. The contact stated that while driving at an undisclosed speed, the ABS and the Electronic Stability Control (ESC) warning lights illuminated. Additionally, the cruise control feature was inoperable. The contact stated that the cruise control system failure had caused the ABS and ESC systems to fail. The local dealer was notified of the failure and informed the contact that the replacement parts were back-ordered. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 57,000.
The contact owns a 2015 RAM 1500. The contact stated that while driving on multiple occasions at various speeds the vehicle lost power. A " Service Electronic Throttle Control" message appeared. The check engine warning light was also illuminated. The vehicle was taken to a dealer where it was diagnosed that the crankshaft position sensor needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 145,000.
About a dozen times the accelerator pedal sticks to the floor. The pedal stays depressed even when my foot is not on it anymore. The vehicle races uncontrollably as fast as it can. Occasionally a red warning light with a thunderbolt displays on the dash. I have not taken it to the dealer because it is no longer under warranty but, I have replaced the throttle body and it made no difference. Also I have checked the NHTS website for recalls. My original factory floor mat does not go under pedal so as not to be the culprit. When the pedal sticks to the floor I must place the toe of my shoe on the side of the the accelerator pedal and lift it up. This stops the acceleration and the red warning light goes off. The sticking pedal has occurred about a dozen times and has only happened over the last 18 months. The safety problem is becoming more frequent. …
...The component that failed is the ABS and traction system, the hitch brake system and the cruise control also stopped working, all this abs and traction system when it stops working can cause the vehicle to not move have correct performance in its braking and skidding system, which can be dangerous, especially in severe rainy and humid climates. I took the car for inspection to the dealer in naplenton in kisiimmee fl and the diagnosis so far is that it has damage to the abs module and the abs pump, which must be replaced and whose price for parts and labor is around 1615 $ with a tendency to increase according to the dealer, so far I only have the diagnosis and quote of the arrangement, since the parts take around 7 days to be available. …
I was pulling out from my street that connects to a two lane highway. From my street you can see if cars are coming from quite a distance away. There was a semi truck in the distance going east bound in the direction I needed to torn into. There was absolutely enough room for me to merge out into the east bound lane without the semi truck even being affected. I was now about a 1/4 mile down the road and the semi was still aways back. Then, my truck started to sputter and not accelerate and as this a two lane road there at this point was nowhere to pull over. The semi was now coming up quick due to loss of power in my truck. I turned on my hazards by this time he was close and had to make an evasive lane change to avoid running into the back of me. Luckily, there was no on coming traffic. This is not the first incident of my truck losing power and almost being rear-ended. …
My truck is experiencing the "hemi tick". Upon research, this tick is a common defect in RAM trucks that was supposed to be fixed in later models. Not true. Not only do I need to pay thousands for replacing the manifold, it will be a problem again. The hot/cold engine melds the aluminum and steel, creating a warped or split manifold. To replace it is immense labor, hence costly fees, as the bolts are too small to adequately remove and snap. If drilling out, metal could get into other parts of the engine causing severe damage. I bought this used at $30,000 miles (approx). Per my mechanic, the manifold has already been altered once. They claim it's a safety concern, which includes "loss of power ... especially at highway speeds. This is in addition to the repair costa and loss of value. The earliest appointment is a month away. Yes, it could be inspected upon request. …
Dear NHTSA, I am writing to express my disappointment regarding my experience with my 2015 Ram 1500 EcoDiesel, particularly in relation to unresolved recalls and inadequate service from dealerships. Last year, I began experiencing significant issues with my truck, ultimately leading me to Southern Motors in Springfield. They diagnosed the problem as needing a new engine, which was concerning. However, my vehicle also had outstanding recalls, including one for the fuel pump, which I was informed they did not address and ended up being the issue with the engine in the first place but instead they informed me I would need to pay for a new engine roughly $20k. I then took my truck to Hayes Dodge Ram Jeep Chrysler in Gainesville, Georgia. …
Acceleration complaints in other 1500 years
Frequently asked questions
How common are acceleration problems on the 2015 Ram 1500?
NHTSA has 86 complaints about the speed control & acceleration of the 2015 Ram 1500, 6% of the model year's 1,459 complaints. The component named most often is accelerator pedal (3 mentions).
Is there a recall for 2015 Ram 1500 acceleration problems?
No. NHTSA lists no speed control & acceleration recall for the 2015 Ram 1500, though it has 17 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 2015 Ram 1500 acceleration problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 22% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 2 fires and 2 injuries to speed control & acceleration 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.