There are 9 owner-reported engine complaints for the 2006 Porsche Cayennein NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2006 Porsche Cayenne. The contact stated while driving at an undisclosed speed, the vehicle started to overheat. The contact stated that she was able to navigate the vehicle off the road. The contact then stated that the coolant had drained from the vehicle. The coolant warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the coolant pipes detached, and the radiator hose needed to be replaced. The contact mentioned that the radiator hose was previously replaced; however, the failure recurred. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 53,000.
2006 PORSCHE CAYENNE. CONSUMER WRITES IN REGARDS TO VEHICLE PLASTIC COOLANT PIPES DEFECT. *SMD THE CONSUMER STATED THE ENGINE HAD TO BE TORN APART, TO REPLACE THE PLASTIC COOLANT TUBE AT A COST OF $ 2,625.67. THE CONSUMER STATED PORSCHE NEW ABOUT THE DEFECT SINCE 2011. *JB
THE DEALER SOLD THE VEHICLE KNOWING COOLANT PIPES WERE NOT UPDATED. JUST HAD THE VEHICLE SERVICED IN APRIL HAD TO PAY FOR MAINTENANCE THAT SHOULD HAVE BEEN DONE BEFORE PURCHASE. THEN 1 JUNE THE WARNING LIGHT CAME ON "CHECK COOLANT LEVEL LOW". THEN THE WARNING LIGHT CAME ON "ENGINE TOO HOT". I WAS FORCED TO PAY FOR REPAIRS WHEN THE MECHANIC RECEIVED A BULLETIN FROM PORSCHE ABOUT THE PROBLEM. CONTACTED PORSCHE AND THEY STATED THE DEALER BRUMOS PORSCHE SHOULD NOT HAVE SOLD THE CAR WITHOUT UPDATING THE COOLANT PIPES. I STILL HAD TO PAY OVER $2,000 DOLLARS. *TR
WAS DRIVING AT NORMAL SPEED, CAR SENDS A LOW COOLANT MESSAGE PULLED OVER AND COOLANT SPILL ALL OVER THE GROUND. MY 9 MONTH OLD SON WAS IN THE CAR!!!!
THE COOLANT PIPES FAILED ON A RECENT ROAD TRIP DUE TO THE PIPES CRACKING. I LOST ALL OF MY COOLANT AND OVERHEATED MY ENGINE. THIS SEEMS TO BE A COMMON THEME AMONGST 2004-2006 CAYENNE MODELS AS THERE IS CURRENTLY A CLASS ACTION LAWSUIT PENDING. *TR
I OWN A PORSCHE, CAYENNE S 2006 MODEL. I WAS TRAVELING TO LAS VEGAS, NV FROM HOME (GARDEN GROVE, CA) . ALL OF SUDDEN THERE WAS COOLANT CHECK SIGNAL CAME ON SO I HAVE EXITED FROM FREEWAY AND ADDED MORE COOLANT. HOWEVER THE COOLANT CHECK SIGNAL WOULDN'T GO OFF AND THE TEMP WENT UP SO HIGH THAT I HAD TO PULL OVER TO THE SIDE OF THE ROAD. MAKE THE STORY SHORT, MY WHOLE FAMILY SPENT NEXT 5 HOURS OUT ON 110F SUNLIGHT WITHOUT AC. I HAVE FOUND OUT THAT COOLANT PIPES WERE MADE WITH PLASTIC WHICH CANNOT WITHHOLD THE HEAT WHICH VEHICLE GENERATES. AND ALTHOUGH PORSCHE HAS CHANGED THE PARTS TO ALUMINUM THEY STILL HAVEN'T RECALLED THESE VEHICLES. THEY, PORSCHE, ARE AWARE OF THIS ISSUE AND YET THEY ARE NOT RECALLING THESE VEHICLES. ALSO THEY ARE NOT WILLING TO PAY FOR MY REPAIR. ALTHOUGH THERE WASN'T ANY INJURIES AT THIS INCIDENTS BUT WE COULD HAVE BEEN IN SERIOUS TROUBLE DUE TO DEHYDRATION, ESPECIALLY 2 OF MY KIDS (12Y & 13Y). WHAT IF OTHER FAMILY GETS STRANDED WITHOUT ANY SOURCE OF HELP. I WOULD BE GREATLY APPRECIATED IF YOU COULD HELP ME WITH THIS ISSUE. THANK YOU. *TR
VEHICLE RUNS INEFFICIENTLY WHEN COLD AND SMOKE HAS BEEN NOTED FROM THE EXHAUST PIPE WHEN VEHICLE IS DRIVEN. IT WILL TURN OVER, BUT NOT CATCH. DEALERSHIP WAS TOLD BY PORSCHE TO USE A LOWER OCTANE FUEL (87) TO REMEDY THE PROBLEM. THIS CONTRADICTS THE INFORMATION IN THE OWNER'S MANUAL WHICH STATES ONLY PREMIUM UNLEADED FUEL 91 OR HIGHER SHOULD BE USED. IF THE VEHICLE IS TAKEN INTO A LOWER ALTITUDE AREA, THE FUEL SHOULD REVERT TO PREMIUM. THIS IS A BRAND NEW CAR AND IT DOES NOT START WHEN THE ENGINE IS TURNED OVER, LEADING ME TO BELIEVE THERE IS A MANUFACTURING DEFECT IN THE DESIGN OF THE ENGINE. MY HUSBAND OWNS A 2004 CAYENNE S, WHICH HAS A 4.5 V-8 INSTEAD OF THE 3.2 LITER V-6 AND IT STARTS IMMEDIATELY, EVEN WHEN COLD. *NM
VEHICLE SUDDENLY LOSES POWER ("THROTTLE CONTROL" AS THE SERVICE REP PUTS IT), USUALLY WHILE TRAVELING AT HIGHWAY SPEEDS. THIS CAUSES SUDDEN DECELERATION, CREATING ISSUES FOR SURROUNDING TRAFFIC. IN EACH CASE IF I FLOOR THE ACCELERATOR I CAN MAINTAIN APPROXIMATELY 25 MPH TO GET TO A SIDE STREET, WHERE I ARRANGE FOR A TOW TRUCK. THIS VEHICLE HAS BEEN IN THE SHOP THREE TIMES FOR A TOTAL OF A MONTH, DURING IT'S FIRST 6 MONTHS (14,000 MILES) FOR THIS CONDITION. EACH TIME THE PORSCHE DEALER BELIEVES IT HAS BEEN FIXED. INTERMITTENT SO HARD TO DIAGNOSE. *NM
2006 PORSCHE CAYENNE. CONSUMER STATES COOLANT LEAK AND PROBLEM WITH HAVING THE VEHICLE SERVICED *TGW THE CONSUMER WAS INFORMED BY HIS MECHANIC THAT HE NEEDED TO TAKE THE VEHICLE TO A DEALER, BECAUSE A TECHNICAL SERVICE BULLETIN HAD BEEN ISSUED FOR THE PROBLEM. THE VEHICLE WAS TAKEN TO THE DEALER AND THE PROBLEM WAS CONFIRMED. HOWEVER, PORSCHE ONLY OFFERED TO COVER THE COST OF THE PARTS. THE CONSUMER LEARNED THE ORIGINAL COOLANT PIPES WERE MADE OF PLASTIC. *JB
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 25, 2026