YearToAvoid

2015 Ram 2500 Engine Problems

Engine complaints account for 53 of 214 total complaints (25%) filed against the 2015 Ram 2500, with a median failure mileage of 35,000 miles. A related recall (17V562000) covers water pump failures on the Cummins 6.7L Turbo Diesel engine.

Engine complaints
53
25% of 214
Crashes reported
2
Fires reported
1
Injuries reported
3
Median mileage
35,000 mi
Related recalls
1

Typical engine symptoms owners report

  • Owners describe a 'dead pedal' delay where pressing the accelerator produces no throttle response for several seconds, especially when accelerating from a stop or merging into traffic.
  • Several drivers report the delay happens after briefly releasing and then re-pressing the accelerator pedal, with worse lag the harder the pedal is pressed.
  • One owner reported the water pump failed while driving, causing the serpentine belt to slip off and resulting in loss of power steering and power brakes, which led to a crash.
  • Some owners noted a heavy diesel smell near stops during the DEF regeneration process, along with a loud clunk from the driveline when shifting gears.
  • One report described the ignition being accidentally bumped to the accessory position at speed, cutting engine power and making the truck hard to steer.

When 2015 Ram 2500 engine complaints were filed

First complaint Aug 11, 2015, latest Jul 29, 2026.

2015 Ram 2500 engine complaints: complaints filed per month3Aug 2015Jun 2016Nov 2017Aug 2018Sep 2019Oct 2020Apr 2023Feb 2024
53 complaints filed with NHTSA from Aug 2015 to Jul 2026; peak Nov 2015 (3).

Engine recalls for the 2015 Ram 2500

  1. NHTSA 17V562000Sep 12, 2017Engine443,874 vehicles

    Engine and engine cooling:engine:diesel

    Chrysler (FCA US LLC) is recalling certain 2013-2017 RAM 2500, 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles, equipped with Cummins 6.7L Turbo Diesel engines that have Concentric-brand water pumps without a vent hole. These water pumps may leak coolant.

    Risk: The leaking water pump can increase the risk of an engine compartment fire.

    Remedy: Chrysler will notify owners, and dealers will replace the water pumps, free of charge. The recall began February 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is T51.

Engine complaints by 2500 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 201354 (30%)
  2. 201487 (26%)
  3. 201553 (25%)
  4. 201671 (28%)
  5. 2017117 (17%)
  6. 2018380 (15%)
  7. 201941 (21%)
  8. 202036 (22%)
  9. 202129 (27%)
  10. 202238 (21%)
  11. 202312 (25%)
  12. 202410 (17%)
  13. 202511 (18%)

Frequently asked questions

How common are engine problems in the 2015 Ram 2500?
NHTSA lists 53 engine complaints for the 2015 Ram 2500, which is 25% of the 214 total complaints filed for that model year.
Is there a recall for the 2015 Ram 2500 engine?
Yes. Recall 17V562000, reported in September 2017, covers water pump failures on the Cummins 6.7L Turbo Diesel engine in certain 2013-2017 Ram 2500 and related trucks. Dealers replace the water pump free of charge.
At what mileage do engine problems typically show up on the 2015 Ram 2500?
The median mileage at failure for engine-related complaints on the 2015 Ram 2500 is 35,000 miles.
What is the 'dead pedal' issue owners describe?
Multiple owners report a delay of several seconds between pressing the accelerator and the truck actually accelerating, most often when pulling out from a stop or merging into traffic.
Has the engine issue caused any crashes or injuries?
NHTSA data tied to this engine complaint area shows 2 crashes, 1 fire, and 3 injuries reported for the 2015 Ram 2500.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.