There are 1 owner-reported body & structure complaints for the 2018 Ram 3500in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
On Sept 11, 2022, we experienced a heavy rain shower while traveling along I64 westbound in VA. My 7 year old daughter in the back seat informed me the headliner was wet in the rear driver side corner. Upon further inspection the passenger side headliner rear corner was also wet. I inspected the top of the ruck, no damage was noted and the seals all appeared to be in place. There is a Jereco High Rise cap on the bed of the truck and we were pulling a 38' travel trailer at the time. The posted speed limit was 70mph on the stretch of road where the rain was encountered, however we were traveling between 40-60 mph during the rain event. No immediate safety risk was present. However, I'm concerned water intrusion may eventually result in an electrical fire or failure of a required safety device. Should water find it's way into a hidden harness or other electrical component such as the CHMSL (VOQ 10968851) or factory subwoofer which is located below the area which leaked. The vehicle has not been inspected or repaired by a dealer as it is just out of warranty. I did report this to RAM via Ram trucks on-line owner's portal. No warning lamps, messages have been observed at this time.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026