2021 Ram Promaster: Reliability Data

Source: NHTSA — 127 complaints
127
Total Complaints
20,000mi
Median Mileage
UNKNOWN OR OTHER
Top Issue
2
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

10,589 25th Percentile
20,000 Median Mileage
59,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

UNKNOWN OR OTHER
18
ELECTRICAL SYSTEM
16
LANE DEPARTURE: BLIND SPOT DETECTION
14
BACK OVER PREVENTION
12
POWER TRAIN
8
SERVICE BRAKES
7
WHEELS
6
SEAT BELTS
6
ENGINE AND ENGINE COOLING
6
ENGINE
5

Severity Assessment

2
Crashes
4
Fires
0
Injuries
0
Deaths

Sample Complaint Reports

"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/WAT..."
"Vehicle bottomed out and lodged on concrete entering driveway. Thor Scope Ram Promaster 1500 Chassis sits low and Thor installed Cummins Onan generator and 2 Trojan batteries under the chassis, that sit 2 or more inches below the rear axle against the Cummins install guidelines. The generator needs ..."
"Vehicle bottomed out and lodged on concrete entering driveway. Thor Scope Ram Promaster 1500 Chassis sits low and Thor installed Cummins Onan generator and 2 Trojan batteries under the chassis, that sit 2 or more inches below the rear axle against the Cummins install guidelines. The generator needs ..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28