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What 104 owners told NHTSA about the 2021 Ram Promaster 3500

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 (104)Crash / fire / injury (4)Backup camera & sensors (23)Electrical system (19)Lane Departure (14)Transmission & drivetrain (11)Brakes (7)Engine & cooling (7)Wheels (7)Seat belts (6)Engine (5)Equipment (5)

1 of 104 complaints match · Backup camera & sensors · crash/fire/injury only · clear filters

Mar 3, 2026EngineBackup camera & sensorsFire

The contact owned a 2021 Ram Promaster 1500. The contact had stopped at a house that the contact worked on and parked the vehicle on the side of the house. The contact turned off the engine and entered the house, and after twenty minutes, when the contact stepped outside, the vehicle was engulfed in flames. The flames spread to the house and caused damage to the property. Some of the paint melted; the garage door, driveway, side door, and some of the landscape were damaged. The fire department was called and extinguished the fire. No police report was filed. The contact was informed by the fire department that the fire started due to a mechanical issue in the engine area. Afterwards, the contact was informed by the fire department that the investigation into the origin of the fire was inconclusive. The insurance company was notified and towed the vehicle to an unknown location. The insurance company declared the vehicle a total loss. The manufacturer was notified of the fire. The manufacturer advised the contact that a field inspector would be sent to inspect the vehicle. The field inspector had inspected the vehicle. The contact received an email from the manufacturer stating that the damage was not their responsibility and the claim had been closed. The contact stated that two weeks prior to the fire, a message saying "rear camera not available" was displayed, and an unknown warning code was illuminated on the instrument panel. Upon further investigation, the contact discovered that NHTSA Campaign Number: 25V552000 (BACK OVER PREVENTION) was associated with the VIN. The failure mileage was approximately 64,000.

NHTSA ODI 11721779

Working with the data? Download all 104 complaints as CSV · fetched from NHTSA July 14, 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 2021 Ram Promaster 3500 verdict →