There are 4 stored owner reports matching the fuel system leading-label group for the 2017 Kia Cadenza 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 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)Strong fuel odor after filling up fuel coming from the driver side, and can still be smelled inside the vehicle.
Unknown
THIS IS A CONTINUATION OF PREVIOUS NHTSA COMPLAINT ID 11047835. THE STRONG RAW FUEL ODOR AFTER FILLUP RECURRED ON MY VEHICLE AT 9550 MILES, 3600 MILES AFTER THIS PROBLEM WAS SUPPOSED TO BE FIXED. DEALER CLAIMS TO HAVE REPAIRED GAP IN THE PREVIOUSLY-REPLACED HIGH PRESSURE FUEL PUMP SEAL; HOWEVER, FUEL SMELL REMAINS WHEN TANK IS FULL UNTIL DEPLETED TO ABOUT HALF. I ASK NHTSA TO INVESTIGATE THIS RECURRING PROBLEM WITH THE KIA CADENZA.
SHORTLY AFTER FILLING FUEL TANK A STRONG RAW FUEL ODOR EMANATED FROM THE LEFT SIDE OF THE VEHICLE NEAR THE FUEL DOOR. THE SMELL WAS MOST PRONOUNCED OUTSIDE THE VEHICLE. INITIALLY I THOUGHT SOME FUEL HAD SPILLED, BUT THE SMELL LASTED SEVERAL DAYS UNTIL THE TANK WAS DEPLETED TO 1/2 FULL, AND IMMEDIATELY CAME BACK UPON NEXT FILL UP. NO CEL OR CODES WERE THROWN, AND DRIVABILITY WAS NOT AFFECTED. DEALER SERVICE DEPARTMENT INITIALLY MISDIAGNOSED PROBLEM AS CLOGGED FUEL VENT LINES, BUT ON THE SECOND VISIT THEY APPEAR TO HAVE CORRECTLY IDENTIFIED THE ISSUE AS A LEAKING SEAL AROUND THE HIGH PRESSURE FUEL PUMP ATOP THE VEHICLE'S FUEL TANK. DEALER INVOICE NOTES THE FUEL PUMP GASKET WAS "TORN APART." (THE INVOICE INCORRECTLY NOTES THE SMELL WAS APPARENT INSIDE THE VEHICLE, NOT THE OUTSIDE.)
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.