Home · 2021 Ram Promaster (passenger Double Seat) · Complaints

What 104 owners told NHTSA about the 2021 Ram Promaster (passenger Double Seat)

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)

6 of 104 complaints match · Seat belts · clear filters

Jan 27, 2026Electrical systemSeat beltsEngine

The 2021 Ram ProMaster 2500 I purchased from a dealer on 12/6/25 now has a serious safety defect. The transmission began grinding when shifting into Drive on 1/27/26. Immediately after, the vehicle started rolling backwards while fully in Park with the engine running. This indicates a failure of the parking pawl or internal gearset. The backup camera also does not function, there are coolant and power steering leaks, and the axle/wheel bearing is failing. The dealer claimed the van passed a “120-point inspection,” but it is clearly unsafe and unfit for operation. This defect poses a risk of rollaway injury, crash, and property damage.

NHTSA ODI 11713763

Oct 14, 2025Seat belts

The contact owns a 2021 Ram Promaster 2500. The contact stated that the driver’s and passenger’s side seat belts' webbing was frayed. The contact had not experienced a failure with the seat belts; however, due to the safety concerns, the vehicle was taken to the dealer, and the seat belts were replaced. The manufacturer was notified of the failure and confirmed that there was no recall associated with the failure. The failure mileage was unknown. The VIN was not available.

NHTSA ODI 11693321

Jun 30, 2023Seat belts

Seat belt doesn’t retract or extent when in use or not in use. When you break, it lets loose and when you are driving it locked down.

NHTSA ODI 11529834

Mar 14, 2023Seat belts

The contact owns a 2022 Thor Scope RV constructed on a 2021 Ram 1500 chassis. The contact stated that the rear passenger's side seat belt was inoperable due to the length of the seat belt. The RV was taken to the dealer, where it was diagnosed that the seat belt was installed as designed. The RV was not repaired. The manufacturer was made aware of the failure and confirmed that the seat belt was installed as designed. The failure mileage was approximately 3,072. The consumer stated the authorization to address has been declined multiple times.

NHTSA ODI 11511734

Nov 24, 2021Seat belts

The contact owns a 2021 Ram Promaster 3500. The contact stated that while there were passengers occupying the dinette booth, the seat belts failed to accommodate the passenger. The local dealer was not contacted. The vehicle was diagnosed and repaired. The manufacturer was notified however, no further assistance was provided. The approximate failure mileage was 1,200. Consumer stated he would like to withdrawal the complaint.*JB

NHTSA ODI 11441581

Apr 13, 2021Seat belts

THE BACK SEATBELTS SEIZE UP AND NO LONGER EXTEND. THIS CAN HAPPEN AT ANY TIME. THERE HAVE BEEN NUMEROUS COMPLAINTS ON THE FORUMS AND SOMEONE EVEN POSTED A VIDEO DESCRIBING THE ISSUE BEING RELATED TO THE LEVELING FEATURE IN THE SEATBELT MECHANISM NOT FUNCTIONING CORRECTLY: HTTPS://WWW.YOUTUBE.COM/WATCH?V=RO6BNJE-LKK

NHTSA ODI 11407908

Working with the data? Download all 104 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 2021 Ram Promaster (passenger Double Seat) verdict →