There are 4 owner-reported fuel system complaints for the 2009 Porsche Cayennein NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2009 Porsche Cayenne. The contact stated that there was an abnormal fuel odor inside the vehicle. The contact stated there was visible damage to the fuel tank flange, and there was a leak coming from the fuel tank. The contact stated that the OBD port provided a code and that the fuel was too lean, causing the RPM to fluctuate. The vehicle was taken to an independent mechanic for throttle body repair, but the failure persisted. A dealer was not contacted. The manufacturer was not notified of the failure. The failure mileage was 157,000.
Fuel leaking from fuel tank
Very strong gas smell at driver side rear tire area.
TL* THE CONTACT OWNS A 2009 PORSCHE CAYENNE. THE CONTACT STATED THAT THERE WAS AN ABNORMAL FUEL ODOR INSIDE OF THE VEHICLE EMANATING FROM THE DRIVER'S SIDE REAR OF THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED NOR REPAIRED. A DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND SUGGESTED THE CONTACT HAVE THE VEHICLE TAKEN TO AN AUTHORIZED DEALER TO BE DIAGNOSED AND REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 190,000.
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.
Data synced from NHTSA on Apr 26, 2026