2025/2026 Armada owners: raw gasoline smell from capless filler after shutdown?
I have a 2026 Armada with less than 200 miles, and I’m trying to determine whether anyone else has experienced this.
Almost every time I drive the vehicle, shut it off, and park in the garage, I get a distinct raw gasoline/vapor smell from the capless fuel-filler area.
What I’m observing:
Strongest immediately after shutdown
Clearly strongest directly at the capless filler opening
Gradually fades, usually within about 30 minutes
No CEL or EVAP codes
No visible fuel leak
No drivability problems
I took it to the dealer. They could not reproduce the odor and found no EVAP codes. They did not perform an EVAP smoke test because they couldn’t reproduce the smell and there were no codes.
Their explanation was that some gasoline odor can be normal because the EVAP/charcoal canister may release pressure/vapor to the atmosphere after shutdown. I’m having a hard time reconciling that with my understanding that the charcoal canister is supposed to capture fuel vapor.
I’ve already found a couple of 2025/2026 Armada owners reporting similar fuel-vapor/gasoline odor issues.
I also found Nissan TSB NTB26-006, which previously addressed a capless fuel-filler lower-seal EVAP leak on these Armadas. Nissan later made the bulletin inactive, so I’m not assuming that’s necessarily what is happening with mine.
For anyone who has experienced something similar:
Did your dealer consider the odor normal?
Did you have an EVAP code or CEL?
Was a smoke test eventually performed?
Did they find an issue with the filler assembly, charcoal canister, tank, or EVAP system?
What ultimately fixed it?
Mainly trying to determine whether this is actually normal capless-system behavior or something I should continue pursuing with Nissan.