There are 3 stored owner reports matching the fuel system leading-label group for the 2023 Toyota Highlander 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 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)Vehicle smells like gas/fuel sometimes. I brought it to the dealership and was advised that they cannot duplicate my concerns since they can't smell anything when I dropped it off.
On hot days the evap system does not function properly. You can visibly see gas fumes spewing from the filler neck area. The smell of gas inside and outside of the vehicle is horrible. It has caused headaches, nausea and dizziness to the passengers inside of the vehicle. It is extremely unsafe and Toyota doesn't know how to fix it. They are aware of the problem but refuse to remedy it. I personally know of 3 other highlanders doing the same thing. Not only is it a personal safety concern, it's also an environmental issue. This problem is with 2023 and newer highlanders and grand highlanders.
The contact owns a 2023 Toyota Highlander. The contact stated that while operating the vehicle, the odor of gasoline was present inside and outside of the vehicle. The contact indicated that the failure had occurred intermittently after refueling the vehicle on extremely hot days. The vehicle was taken to the local dealer who was unable to duplicate the failure and the cause of the failure was not determined. The manufacturer was notified of the failure. The failure mileage was 40,000.
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 29, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.