Home · 2025 Ram Ram 2500 Mega Cab · Complaints

What 57 owners told NHTSA about the 2025 Ram Ram 2500 Mega Cab

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (57)Crash / fire / injury (1)Electrical system (36)Lights (13)Engine (7)Brakes (5)Transmission & drivetrain (5)Airbags (4)Engine & cooling (2)Fuel system (2)Lane Departure (2)Steering (2)

Newest first · 57 complaints · page 3 of 3

Jul 25, 2025Transmission & drivetrainElectrical system

While driving at a low speed vehicle has shut down and VIC says shift into park to start once you shift the vehicle into park you can restart it . This has happened twice and no computer codes are stored.

NHTSA ODI 11676123

Jul 24, 2025

Unknown. purchase June 2025, 1297 miles on odometer. On 4 occasions engine has died for no apparent reason in traffic. (Specific Hazard is that vehicle must be put in park and brake applied to restart. Very hazardous in traffic especially if pulling a trailer.) In each case vehicle was slowing to make a turn. Signal on and brake lightly applied, Nothing noticed on dash except when notice to put in park and apply brake to Start Engine appears. Dealer has not returned my call for service. Advised them on July 22. Have seen other mention of issue on internet but not this model year and did not notice mention of how hazardous it is to have to come to a complete stop to restart vehicle.

NHTSA ODI 11675795

Jul 4, 2025Electrical system

Intermittent blackout of driver display screen while vehicle is running. Also, intermittent blackout of navigation screen on 14.4 inch display screen while vehicle is running.

NHTSA ODI 11671250

Jul 3, 2025Engine & cooling

The contact owns a 2025 Ram 2500. The contact stated that while driving at an undisclosed speed, the vehicle stalled with the Diesel Exhaust Fluid (DEF) message displayed. The vehicle was able to restart. The vehicle was taken to the dealer, where it was diagnosed that the Diesel Exhaust Fluid (DEF) system had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 1,700.

NHTSA ODI 11671111

May 31, 2025Brakes

The brakes are very inconsistent with a spongy pedal. When a vehicle in front of me caused an emergency stop, the pedal continued to travel almost to the floor and never felt firm. However, if the adaptive cruise control starts to brake first and the brake pedal gets depressed by the driver after that, it feels firm. These brakes are very unsafe on a truck rated to tow as much as these are.

NHTSA ODI 11664091

May 14, 2025Electrical systemEngine

When letting off the gas and coasting to turn on a road around 10 mph, vehicle motor shut off and lost power steering control. Vehicle alerted to place vehicle in park, press break and push start button. Vehicle started back with no issues. Reported to dealer, dealer picked up and stated they could not find any issues and returned to me. Following day while going to work vehicle again shut off when pulling up to a gate entry and then again approaching my return to home at stop sign. All three times vehicle was under 15 mph and approaching turn/stop. New Truck, only 30 miles on it when first incident occurred and only 160 miles now. Dealer still not able to duplicate or locate the problem. System is showing no codes.

NHTSA ODI 11660943

Apr 14, 2025Transmission & drivetrain

My 2025 RAM 2500 is throwing a P0315 Engine Code. This is part of the NHTSA ID Number: 11016056 and Manufacturer Communication Number: S251800000. Dealer has advised me to not drive the vehicle until there is a fix for it. Truck only has 150 miles on it.

NHTSA ODI 11654501

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Working with the data? Download all 57 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2025 Ram Ram 2500 Mega Cab verdict →