2021 Ram 1500: gas smell in the cabin

Filed Jun 8, 2026 · Engine · AL

Both exhaust manifold cracked causing exhaust fumes to leak in to cab

Filed May 13, 2026 · Engine · OH

The exhaust manifold on both sides of the motor have cracked and have broken bolts. The Ram dealer confirmed it and says it is a known issue that the manufacturer will not fix. With the crack and broken bolts, exhaust fumes are leaking out. It gets nauseating in the cab of the truck if the windows are up for too long. My independent mechanic is set to replace the manifolds with aftermarket ones due to literature saying the OEM will end up the same way. No dash lights have illuminated.

Filed Dec 10, 2025 · Engine · MI

Exhaust manifold on passenger side has cracked leading to exhaust fumes in cabin, causing dizziness and headaches due to carbon monoxide ram has acknowledged this issue with a TSB but the fact that exhaust fumes come into the cabin on a vehicle that is five years old is concerning and in my opinion, a safety concern.

Filed Aug 22, 2025 · MI

I was told by the dealer that the exhaust bolts for the Y pipe to the extension pipe are broken causing my exhaust to be louder than normal. My truck is 4 years old and I expect that the exhaust hardware would last longer than 4 years but apparently not. This condition may allow exhaust fumes to leak into the cab area of the vehicle potentially leading to someone getting sick or worse causing an accident from potentially loosing consciousness while driving. I went to a forum where they discussed this issue of the broken bolts on the Dodge Ram Trucks.

Filed May 13, 2025 · Engine, Transmission · CA

I am reporting a recurring safety issue involving exhaust fumes entering the cabin of my 2021 Ram 1500 Big Horn, particularly during cold starts or remote starts while idling. Despite multiple attempts to have this issue repaired through authorized dealerships, the problem has not been resolved. On the first visit, dealership technicians discovered two cracked exhaust manifolds, which were replaced. On a second visit, they found and tightened bolts further. On the third visit, they claimed there was no longer a problem, but no physical diagnostic tests (such as pressure, bubble, or smoke testing) were conducted. Still concerned for my family’s safety, I paid for an independent diagnostic inspection. The certified mechanic confirmed an exhaust leak at the junction between the exhaust manifold and collector pipe, citing either improper installation or flawed sealing from previous repairs. The technician verified this using a stethoscope and noted a strong odor inside the cabin via the HVAC system. This issue poses a potential carbon monoxide exposure risk to occupants, especially during colder conditions when the vehicle is idling and windows are closed. RAM case management (case #92878431) has been involved, but there has been poor communication and no clear resolution. I am concerned this is a manufacturing or design defect and that it could affect other owners. I am requesting that the federal safety agency investigate this issue due to the serious health and safety risks associated with exhaust fume exposure.

Filed Jul 24, 2023 · Engine · NC

Exhaust manifolds are both cracked and leaking exhaust. I have to keep my air on recirculating to keep exhaust fumes out of the cab.

Filed Dec 19, 2022 · Fuel system · KY

I was at service station to get gas, and the nozzle clicks off no matter what speed I try, even though my tank shows being 1/2 full. Gas also runs out getting on my hand, the truck, and the ground. This is my first report of the problem, but it has occurred several times over the past two months. I had wondered if it could have been the nozzle malfunctioning, but I pulled up to the next pump and encountered the same issue. Had we been on a trip and unable to add fuel we could have been stranded. Had we been on an Interstate and got stuck in traffic for an extended time, we could suffer the consequence of running out of fuel. The result could be tragic had the overflowing gas found an ignition source. Finally, the presence and smell of gasoline on me and my clothing is irritating and disguising