There are 11 owner-reported engine complaints for the 2005 Porsche Cayennein NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
THE ENGINE HAS PLASTIC COOLANT PIPES BETWEEN THE FRONT AND BACK OF THE ENGINE. THEY FAILED AND DUMPED ALL THE COOLANT OUT WHILE ON THE ROAD. CAR WAS DISABLED AND HAD TO BE TOWED. AFTER RESEARCHING, IT'S CONCLUDED THAT THIS IS A VERY COMMON FAILURE IN CAYENNES WITH A V8 ENGINE AT ABOUT 60000 MILES. MINE HAD 61000. THIS IS A SAFETY CONCERN. THE CAR CAN BE DISABLED AT ANYTIME. ALSO, THE REPAIR IS VERY COSTLY, EXCEEDING 3000 USD FOR PARTS AND LABOR.
COOLANT PIPE FAILURE. *TR
TL* THE CONTACT OWNS A 2005 PORSCHE CAYENNE S. THE CONTACT STATED THAT THE RADIATOR PIPE WAS FRACTURED, CAUSING ANTI FREEZE TO LEAK FROM THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER WHERE THE ORIGINAL HOSE LINES WERE REPLACED WITH METAL LINES DUE TO CORROSION. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE HOWEVER, DID NOT OFFER ANY ASSISTANCE. THE CURRENT MILEAGE WAS 75,000 AND THE APPROXIMATE FAILURE MILEAGE WAS 74,800.
TL*THE CONTACT OWNS A 2005 PORSCHE CAYENNE. THE CONTACT STATED WHILE DRIVING AT LOW AND HIGH SPEEDS THE VEHICLE LUNGED FORWARD. HE ALSO HEARD A LOUD NOISE IN THE ENGINE. THE VEHICLE WAS INSPECTED BY A DEALER WHO ADVISED HIM THAT THE IGNITION COIL AND CYLINDER NUMBER 5 NEEDED TO BE REPLACED. THE IGNITION COIL WAS REPAIRED; HOWEVER, IMMEDIATELY AFTER LEAVING THE DEALER THE FAILURE RECURRED. THE DEALER WAS CONTACTED AND ADVISED HIM TO BRING THE VEHICLE BACK. THE FAILURE MILEAGE WAS APPROXIMATELY 66,000. THE VIN WAS UNAVAILABLE.
TL*THE CONTACT OWNS A 2005 PORSCHE CAYENNE. THE CONTACT STATED THAT THE ENGINE LIGHT WAS ILLUMINATED THEN THE VEHICLE STARTED TO LUNGE FORWARD WHEN THE CONTACT TRIED TO ACCELERATE, AND IT BECAME DIFFICULT TO SHIFT GEARS. THE VEHICLE WAS INSPECTED BY A DEALER WHO ADVISED HIM THAT THERE WAS A MISFIRE ON THE ENGINE AND ONE OF ITS COMPONENTS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ARE CURRENTLY WAITING FOR A RESPONSE. THE FAILURE MILEAGE WAS APPROXIMATELY 47,000. UPDATED 05/04/11 *BF UPDATED 05/11/11
I WAS DRIVING A PORSCHE CAYENNE S TODAY ON HIGHWAY AT 65MPH. THE CAR UNEXPECTEDLY SLOWED DOWN BY AROUND 20 MILES FOR ABOUT 10 SECONDS. 5 MINUTES LATER, SAME PROBLEM OCCURRED AGAIN AND THEN THE ENGINE STALLED, AND THE STEERING WHEEL LOCKED. IT IS VERY DANGEROUS TO STALL ON HIGHWAY, WITHOUT TOO MUCH CONTROL ON STEERING WHEEL. THE DEALER SAID THEY COULD NOT FIND THE PROBLEM. *TR
I OWN A 2005 PORSCHE CAYENNE. SINCE OWNING THIS TRUCK THERE HAVE BEEN NUMEROUS ITEMS THAT HAVE GONE WRONG. ALL THE MAIN COMPUTERS HAD TO BE REPLACED, FRONT DRIVE SHAFT, TRANSMISSION, AND NOW A COOLANT TUBE. THE LAST ITEM IS MY CONCERN, WHICH COST $2,800.00 TO FIX ON A TRUCK THAT HAS 71,000 MILES ON IT. WHEN IT WAS TAKEN TO THE DEALER I WAS TOLD THAT ALL THE CAYENNE?S FROM 2003 ? 2006 HAVE TO HAVE THIS PART CHANGED (IT?S MADE OF PLASTIC), BECAUSE IT BREAKS. NOW PORSCHE KNOWS THERE IS AN ISSUE WITH THIS PART BECAUSE IT HAS RECALLED OF THE REPLACEMENT PARTS THAT WHERE ON ALL OF THE DEALERSHIPS SHELVES. AFTER DOING THIS THERE REDESIGNED THE AND PART MADE IT OUT OF ALUMINUM AND HAD THIS PART ON BACK ORDER BECAUSE THERE WHERE SO MANY CAYENNE?S THAT NEED THIS PART FIXED SITTING IN THE DEALERSHIPS. I HAVE TRIED WORKING WITH PORSCHE BUT THEY JUST SAY THAT I?M OUT OF WARRANTY AND THERE IS NOTHING THEY WILL DO! IT SEEMS TO ME THAT WHEN THEY NEED TO REPLACE THIS PART ON ALL OF ITS TRUCKS THERE IS AN ISSUE. HELP! *TR
VEHICLE HESITATION - THREE OCCASIONS - FIRST WHILE TRYING TO CROSS A DIVIDED HIGHWAY...CAR HESITATED, LEFT ME IN THE EAST BOUND LANE , ONCOMING CAR JUST MISSED MY WIFE AND I; SECOND WHILE CROSSING A TWO LAND HIGHWAY - CAR HESITATED WHILE I WAS IN WEST BOUND LANE, ATTEMPTING TO HEAD EAST BOUND .. NO ACCIDENT; THIRD TIME IN DRIVE WAY. TOOK CAR TO DEALER AFTER FIRST INCIDENT - NOTHING SHOWED ON CAR COMPUTER SO NOTHING WAS DONE; AFTER SECOND AND THIRD INCIDENT I TOOK CAR TO DEALER AND IS NOW REPLACING THE SIX COILS (?) AFTER MY VERY CONCERNED COMPLAINT. CAR IS STILL WITH DEALER. CAN I TRUST THE REPAIR OR WILL I BE LESS LUCKY THE NEXT TIME???*JB
WHILE DRIVING AT APPROXIMATELY 70 MPH, THE ENGINE FAILED. THE OWNER CONTACTED THE DEALERSHIP, AND HAD THE VEHICLE TOWED TO THE DEALERSHIP. THE OWNER WAS TOLD THAT THERE WAS A CRACK IN THE ENGINE. THE OWNER ALSO CONTACTED THE MANUFACTURER, BUT WAS UNSUCCESSFUL IN GETTING ANY ASSISTANCE. *AK *SC *JB
CONSUMER REQUEST FOR PORSCHE CARS OF NORTH AMERICA TO REPURCHASE HIS 2005 PORSCHE CAYENNE.***NO ANSWER REQUIRED***. *MR THE CONSUMER HAS EXPERIENCED NUMEROUS MECHANICAL PROBLEMS WITH HIS VEHICLE SUCH AS ENGINE STALLING, A REPLACEMENT AIR BAG MODULE, BATTERY FAILURE, FUEL TANK SENDER CALIBRATION. *JB
1) THE VISIT WORKSHOP LIGHT APPEARED ON MY NEW 2005 PORSCHE 911 CARRERA S. 2) ON NOVEMBER 30, 2004 THE VEHICLE WAS RUNNING FINE WITH THE WORKSHOP LIGHT ON. THE VEHICLE THEN SUDDENLY LOST ENGINE POWER AT 65 MPH DURRING ACCELERATION ON THE NJ TURNPIKE. THE LOSS OF ENGINE POWER CAUSED SEVERAL TRACTOR-TRAILERS TO NEARLY COLIDE WITH MY VEHICLE, AND WITH OTHERS, WHILE I PROCEEDED TWORDS THE SHOLDER AREA. THE VEHICLE WAS THEN ABLE TO RUN ENOUGH ON THE SHOLDER AT 15 TO 30 MPH TO A SAFE EXIT OFF THE TURNPIKE. 3) THE VEHICLE IS AT THE RAY CATENA PORSCHE SERVICE AREA IN EDISON NEW JERSEY, AND IT HAS NOT BEEN LOOKED AT, TO DIAGNOSE THE FAILURE.*AK
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