There are 1 stored owner reports matching the fuel system leading-label group for the 2023 Ram ProMaster in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)My company issued 2023 Ram Promaster has an issue with the cab filling up with raw gas fumes during hot weather. They are very over bearing, make breathing difficult and of course they are flammable. I've taken it to the dealership 4 times now over the past year. The first 3 times they've said they can't replicate it and they don't smell anything. One dealership did try replacing the evap canister and fuel tank pressure sensor but this did not fix the issue. Eventually I determined the source of the fumes myself. They are back flowing from the leak detection pump filter and I even have this on video. The 4th time I took the van back, showed them the video and raised a fuss so they gave me a brand new 2025 to borrow while they try to fix my work van. Well sure enough I have caught the 2025 loaner doing the same thing and I also have it on video and have a witness. This leads to me to believe this is a factory design flaw with the Ram Promaster vans. They are supposedly submitting this to their engineering department but I do not want this getting swept under the rug. If you look up emissions recall UB4 it appears they have had this issue for years but never truly fixed it. The manufacturer is getting away with putting dangerous vehicles on the road and not properly resolving the issue.
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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.