

Engine (38%)
Transmission and Drivetrain (13%)
Brakes and Traction Control (5%)
Suspension and Steering (10%)
Electrical and Air Conditioning (19%)
Paint, Rust, Leaks, Rattles, and Trim (8%)
Other (7%)
$2500+ (10%)
$1000 - $2499 (16%)
$500 - $999 (14%)
$100 - $499 (28%)
< $100 (33%)
turbocharged 240hp 3.0L V6 Diesel 8-speed shiftable automatic AWD
35340 mi | Emission issue with EGR valve and components |
300-horsepower 3.6L V6 8-speed shiftable automatic AWD
53000 mi US $3400 |
Leaking oil air separator, new tires, brakes. |
71000 mi US $308 |
Fuel pressure sensor replaced |
supercharged 333hp 3.0L V6 Plug-in Hybrid 8-speed shiftable automatic AWD
60000 mi US $15000 |
Hybrid system gone bad |
Engine not specified
25000 mi US $500 |
Leaking water pump |
turbocharged 550hp 4.8L V8 8-speed shiftable automatic AWD
44000 mi | Cracked crankcase drain nut |
turbocharged 240hp 3.0L V6 Diesel 8-speed shiftable automatic AWD
58280 mi | Check engine light came on, but performance remained unchanged. O2 sensor apparently came loose. Dealer cleaned sensor and reattached sensor. |
61380 mi | Same oxygen sensor problem |
107260 mi | Replace rear seals |
57000 mi | Engine tweaked with software and installed new cat converter to fix high diesel emission. |
36800 mi | Sensor for DEF fluid was defective. |
51000 mi | Diesel emissions repair under EPA settlement |
400-horsepower 4.8L V8 8-speed shiftable automatic AWD
28000 mi | High pressure fuel failed and was replaced under warranty. |
300-horsepower 3.6L V6 8-speed shiftable automatic AWD
27000 mi | Replaced water pump. Tech discovered coolant weeping from bearing. |
turbocharged 240hp 3.0L V6 Diesel 8-speed shiftable automatic AWD
127000 mi US $900 |
Low Fuel Pressure -- goes into limp mode Clear Codes and replace battery |
55000 mi | Car was driving poorly after diesel emissions repair. Dealer reset adaptation values for ECU. Drives much better now. |
300-horsepower 3.6L V6 8-speed shiftable automatic AWD
113500 mi US $50 |
Check engine light. Faulty gas cap. Replaced with OEM Porsche gas cap. |
400-horsepower 4.8L V8 8-speed shiftable automatic AWD
76260 mi C $3900 |
Cooling pipe at rear of engine fell out, needed to drop front axle and engine to repair |
42000 mi US $378 |
A fitting was leaking where the coolant goes into the alternator. |
104000 mi US $480 |
High pressure fuel pump failed. Fairly easy to get to and replace. |
turbocharged 500hp 4.8L V8 8-speed shiftable automatic AWD
102000 mi US $800 |
Independent garage redid the work the dealer had done replacing the thermostat housing. The dealer failed to replace 2 seals on the housing causing it to eventually leak coolant. |
105000 mi US $800 |
idle began becoming very rough at intervals. Tracked it down to a bad oil pressure control valve that controls the oil going the the variable lift lifters used in the VarioCam Plus system. Replaced the valve - all fixed. |
48980 mi | camshaft bolts |
400-horsepower 4.8L V8 8-speed shiftable automatic AWD
119660 mi C $800 |
Replaced leaking thermostat and orings. Still have smell of leaking coolant and coolant usage. |
119660 mi C $400 |
Replaced ignition coils and spark plugs |
127100 mi | Thermostat replaced again |
39000 mi US $6000 |
Coolant pipes car had to be towed repair is taking a week and a half to complete |
turbocharged 550hp 4.8L V8 6-speed shiftable automatic AWD w/low range
70200 mi US $100 |
Engine torque strut |
75535 mi US $250 |
Upper and lower oil pans and gaskets |
405-horsepower 4.8L V8 6-speed manual AWD w/low range
57000 mi US $250 |
Failing fuel pump replaced. |
60000 mi US $1700 |
Spark plugs faulty - likely cause is lack of maintenance (purchased car used). |
88000 mi US $1200 |
The dealer also noticed a seeping O-ring seal in the cooling system near the back of the engine, so they fixed that as well. |
59000 mi US $200 |
Check engine code P2404 triggered by low emission system vacuum. Truck ran without issues. Replaced engine vacuum pump to fix. Apparently a common problem that dealer wants $800+ to fix. DIY repaired for the cost of the pump and a few tools |
31000 mi $300 |
Breather / pressure control valve fail (PCV). Replaced. |
385-horsepower 4.8L V8 6-speed shiftable automatic AWD w/low range
80000 mi US $550 |
Replace oil pressure sensor |
79980 mi $350 |
bad performance (cooling system?) |
121000 mi US $50 |
Crankshaft position sensor |
87000 mi US $400 |
Water pump, belts and hoses. Thermostat was stuck open. |
290-horsepower 3.6L V6 6-speed shiftable automatic AWD w/low range
59000 mi US $1500 |
60,000 mile service |
turbocharged 500hp 4.8L V8 6-speed shiftable automatic AWD w/low range
55000 mi | Turbocharger was leaking oil, dealer recommended replacement (Cost w/o warranty would be $4200) Lower oil pan was leaking oil (cost to replace out of warranty would have been $3700). |
405-horsepower 4.8L V8 6-speed shiftable automatic AWD w/low range
43000 mi US $250 |
Also, advised small oil separator leak. Chose to not repair at this time. |
42160 mi C $800 |
Thermostat replacement |
97200 mi US $1700 |
Direct Fuel Injection pump failure |
405-horsepower 4.8L V8 6-speed manual AWD w/low range
85000 mi US $150 |
Needed new cooling system T-stat as it was stuck open. |
89000 mi US $1600 |
Oil leak. Pump and hoses needed to be replaced. Also time for oil change. |
385-horsepower 4.8L V8 6-speed shiftable automatic AWD w/low range
82000 mi US $195 |
Replaced worn out engine torque damper. Easy 10 minute job. |
100000 mi US $178 |
High pitch whistling noise due to a tear in AOS. Car had 100k miles on it and most likely original part. Easy to replace and took about an hour of my time. |
132000 mi US $200 |
Replaced motor mounts |
40000 mi | Evap control replaced |
45000 mi | Purge valve on emissions system. |
58700 mi | Valve on gas cap lid failed. |
52000 mi | Check engine light; possibly related to the issue that started back in September, and MOST DEFINITELY related to the January repair. Had repair been done at the Porsche dealer, this may have been a "one and done." |
56000 mi | check engine light - emissions system repair |
69440 mi $2500 |
replacement ventilation gas carter [similar to EGR] |
92380 mi $2500 |
Thermostat stuck fully open. |
94000 mi US $300 |
Air/oil separator diaghragm failed, causing wandering idle and several codes. |
80000 mi US $1200 |
Check engine light for thermostat. Replaced thermostat, had dealer replace water pump at the same time as preventative measure and flush cooling system. Apparently a common problem at this age/mileage. |
101700 mi US $1100 |
Number 6 coil pack went bad. Flashing check engine light. All 8 coil packs and spark plugs replaced |
106000 mi | We drove for sea level by the coast up to Sequoia National Park for a camping trip on a very hot day. Once we got above 7,000 the Cayenne started stumbling, had no power, and eventually would barely run. We pulled over to the side of the road, hitched a ride to our campsite, and drove it to our campsite after that. No further problems. I took it to the dealer, who could find no problems. From researching online forums, it appears this model is occasionally susceptible to vapor lock |
290-horsepower 3.6L V6 6-speed shiftable automatic AWD w/low range
100440 mi C $3000 |
replaced one cracked fuel injector |
290-horsepower 3.6L V6 6-speed manual AWD w/low range
88000 mi US $900 |
Fuel system leak. First they had to replace the fuel pump and seals, then a new leak immediately developed at the engine |
91000 mi US $80 |
Air intake pipe came loose, causing a Check Engine Light for a mass airflow sensor. |
turbocharged 520hp 4.5L V8 6-speed shiftable automatic AWD w/low range
70300 mi US $1800 |
Coolant pipes failed at 70,000 miles. Spent two weekends replacing pipes myself. Huge pain to perform, would have been over $1000 in labor alone at shop or dealer. If you're buying a Cayenne, ensure this is already done. |
94000 mi US $2400 |
replace cracked plastic coolant tubes with metal ones. Also replaced vacuum lines at rear of motor. |
126000 mi | Cracked vacuum line on booster pump |
126000 mi | fuel leak around the pump shroud. Parts ordered under safety recall AH10 and repair done |
turbocharged 450hp 4.5L V8 6-speed shiftable automatic AWD w/low range
58500 mi | Fuel tank seal leak. |
73700 mi US $200 |
Replaced fuel evap canister purge valve. |
95000 mi US $3000 |
Replaced 2 coil packs and spark plugs |
144000 mi US $1400 |
Stalling at idle when hot. Replaced throttle body |
178000 mi US $300 |
CEL. diagnostic and reset. was only the startup air pump. Runs fine so left it alone. |
42100 mi | Replaced coolant pipes and crankcase breather hoses under warranty. |
46000 mi US $550 |
(2) Replaced spark plugs, cornering lights and checked drive belts $549.57 |
93000 mi | P0441 code. Replaced gas cap with OEM, at 92,720 miles. Added one quart of Castol Edge Platinum 0W-40 Excessive oil consumption and warm-start smoking, possibly due to deteriorating oil fill. Scheduled oil service. |
95000 mi US $26 |
Filled 9 quarts of Castrol Edge 0W-40. Reset OCI indicator lamp, at 93,305 miles. Added 2.5 quarts of Castrol Edge 0W-40 oil. Oil light came on, at 94,848 miles. Still monitoring consumption. |
95000 mi US $9 |
Added one quart Mobil 1 5W-40 Turbo Diesel Truck oil and 6oz of Gumout Regane PEA formula to fuel, at 95,247 miles. |
97000 mi US $44 |
Replaced PCV Valve, at 95,927 miles. Added one quart Mobil 1 0W-40 FS oil. Added 2 Quarts of Mobil 1 05W-40 Turbo Truck Formula Synthetic oil and 8oz of Blue Devil Rear Main Sealer, at 96,669 miles. The sealer swelled the rear main seal back to normal tolerances again, no longer leaking. |
102987 mi US $230 |
Replaced torn Air-Oil-Separator diaphragm membrane. Added 1/2 quart Mobil 1 0w-40. Full oil change and filter service, w/ Mobil 1 0w-40 FS, replaced Intercooler charge pipe o-rings 2x, repaired PCV breather hose. |
104447 mi US $230 |
Repaired broken PCV breather hose. Oil Cooler failure. Leaking coolant externally and oil mixing with coolant. Drained cooling system and oil. Replaced oil cooler with Nissens 90375 Oil Cooler. Oil sample sent for analysis. Refilled with G12 coolant and Mobil1 0W-40. |
106060 mi US $1600 |
Loose water pump bolts resulted in serpentine belt destruction. Damage included: PCV breather hose, turbo wastegate control line and turbo vent line. PCV check valve replaced, due to oil saturation and high oil consumption. |
109303 mi US $160 |
Replaced 2 downstream oxygen sensors (Bank 1/2 - OEM Bosch). |
113740 mi US $45 |
Replaced OEM 710A Diverter Valves with updated 710N DV. Resolved P0299 turbo underboost condition. Replaced stretched Left Intercooler boost hose 0-ring. Mileage: 113,740 miles. |
115292 mi | Leaking fuel filter flange replaced under Goodwill Repair program. Dealer paid 100% of costs. |
116643 mi US $70 |
Replaced torn Air Oil Separator(AOS). Cleaned and tested PCV check valve, including cleaning of PCV breather system, at 116,643 miles. |
128000 mi US $294 |
Replaced all BERU coils with OEM, including all NGK Spark Plugs replaced, at 128,272 miles. Plugs 1/2/3 oil fouled. |
340-horsepower 4.5L V8 6-speed shiftable automatic AWD w/low range
66200 mi US $500 |
Coolant hose leaked |
68404 mi US $771 |
Left fuel cap cracked, replaced left fuel cap Left fuel cap cracked, replaced left fuel cap |
91000 mi | Spark plug coils |
110000 mi US $300 |
Valve cover gaskets |
199000 mi US $3200 |
Replaced ignition coils, rear main seal, |
230000 mi US $1000 |
Engine misfire and intermittent CEL. No codes were present at time of dropoff. Electronic diagnosis was not successful. Intake was smoked, two cracked vacuum lines were replaced and induction service was performed. Problem solved. |
29000 mi | Ignition coils replaced |
33000 mi | Engine block replaced; nine week service visit |
57000 mi | Fixed rough start condition, new fuel filter/check-valve. All covered under CPO warranty. |
78000 mi | Found source of coolant smell, leak on crossover pipe at rear of cylinder heads. Fixed under CPO. No cost to me at all. |
95700 mi US $2300 |
Replace starter which was damaged by leaking cooling tubes |
247-horsepower 3.2L V6 6-speed shiftable automatic AWD w/low range
60100 mi US $1800 |
leak in thermostat housing |
turbocharged 450hp 4.5L V8 6-speed shiftable automatic AWD w/low range
77447 mi US $1222 |
Brought the car in for a check engine light. Diagnosis determiinedd it was a seized secondary air injection pump which was replaced.However, this pump seized again later and K & M Automotive had to replace it again after determining it failed due to a faulty shut off valve. |
78291 mi US $1641 |
One secondary air injection pump and its shut off valve replaced, the other shut off valve was replaced as a precaution. |
340-horsepower 4.5L V8 6-speed shiftable automatic AWD w/low range
147000 mi US $400 |
Purge valve failure |
157000 mi US $990 |
Coil packs |
175000 mi US $1200 |
Water pump |
175800 mi | Valve cover gaskets |
96700 mi US $400 |
Replaced engine torque damper, |
43500 mi | Water pump failed, replaced under warranty. |
92000 mi US $500 |
Engine was running slightly rough, scoped engine and found cylinder scoring. Advised engine would fail without replacement. Cost of new engine higher than blue book value so declined repair. |
135000 mi US $350 |
Fuel Filter Assembly - Located under rear driver side dead. Assembly cracked and was leaking fuel, progressively got worse. |
76300 mi US $83 |
Replaced fuel vapor canister purge valve(OEM part #948.110.202.01). Common issue was hard, rough starts, after refueling and P0441, P0442, P0455 DTC check engine lights. Remove driver side engine compartment covers and install valve/hose. |
78000 mi US $127 |
Leaking fuel, from left rear passenger area. Fuel filter flange(7L0.919.679) and sealing ring(1J0.919.133B) was replaced. |
85019 mi US $502 |
Leaking water pump, at shaft seal. Replaced with new OEM unit, gasket and Continental Serpentine belt. Leaking water pump, at shaft seal. Replaced with new OEM unit, gasket and Continental Serpentine belt. |
89000 mi US $15 |
Transfer case undercarriage cover/shield lost all bolts on forward mounting points, resulting in loud scraping noise at highway speeds. Tire tech was able to replace. |
247-horsepower 3.2L V6 6-speed shiftable automatic AWD w/low range
78000 mi US $236 |
Vacuum leak in emissions system. Garage found leak and ordered new hoses and replaced. |
103200 mi US $200 |
R&R Water pump, main accessory belt. |
105000 mi US $300 |
Vacuum hose cracked and needed to be replaced. Created a CEL |
105300 mi US $2700 |
Engine crankcase and brake booster vacuum lines, main fuel pump R&R. thermostat housing cracked / leaking (back side of engine, required 12 hour labor) |
107600 mi US $1100 |
Water pump housing cracked, leaking coolant. R&R waterpump and housing MAF failed, causing CEL. Needed to be replaced. |
106300 mi US $2300 |
Motor and trans mounts failed. Leaking intake gasket, fouled spark plugs |
114000 mi US $25 |
Replaced oil pressure sensor |
114000 mi US $1500 |
CEL check engine lights. Multiple vacuum leaks. |
turbocharged 450hp 4.5L V8 6-speed shiftable automatic AWD w/low range
132000 mi US $700 |
Intermittent engine power shutdown at less then half a tank of fuel and at highway speed. Remove and replace both fuel pumps and flange units. No more problems. |
100000 mi US $200 |
Bad coil |
102500 mi US $750 |
Leaking cooling fluid reservoir. |
107000 mi | Air Pump failure repair Secondary air pump not working, replaced fuse. |
152200 mi US $800 |
Water pump replacement. At the same time did thermostat and cooling lines. Valve cover gaskets had gone brittle and were leaking. |
181000 mi US $340 |
Fuel Line replaced |
113000 mi US $1400 |
Coolant "T"s on back of engine exploded. Also needed several vent/breather tubes during replacement process. Issue is specific to Turbo models and occurred despite metal coolant pipe upgrade already being installed. |
73000 mi US $600 |
Plastic coolant pipes replaced with aluminum due to leak in plastic pipes. |
68000 mi US $800 |
Emissions. Replaced two O2 sensors (before cat) and the computer would still not reset. Still shows O2 fault. Won't pass California Smog. |
56400 mi US $2200 |
replaced all engine coolant tubes |
60400 mi US $180 |
replaced all 8 pencil ignition coils myself. No labor cost, just parts. All 8 were cracked. |
96000 mi US $125 |
CEL on for small vacuum leak (P0456) in emissions system. Replaced gas cap. |
101000 mi US $300 |
lubed gas cap and CEL stayed off since July. |
114000 mi US $385 |
fuel tank purge valve and oil mist separator had vacuum leaks |
119000 mi US $415 |
large vacuum leak causing CEL to stay on. Gas mileage dropped from 18 mpg to 14 mpg. Replaced the gas tank vent (purge) valve assembly on the front of the engine. |
131800 mi US $3000 |
replaced water pump and 2 radiator hoses. Cost $800 |
133000 mi US $225 |
replaced check valve on evap emission system |
113000 mi US $2000 |
Engine cooling supply lines running down the valleys of the engine block to the heater. The plastic injection molded parts of the assembly failed. Poor application for plastic given the intense heat and pressure. Porsche changed this for the '08. |
80260 mi €4000 |
Two turbos changed due to cracking in one of them starting to leak oil |
115940 mi €2000 |
Replaced plastic connectors for the fuel injectors. New battery |
101000 mi US $3000 |
One turbo oil line replaced. |
340-horsepower 4.5L V8 6-speed shiftable automatic AWD w/low range
82000 mi US $662 |
catastrophic engine failure, cracked cylinder (#3) piston seized, connecting rod smashed piston into valves, connecting rod continued to smash piston into pieces. Vehicle not repaired yet, Porsche NA contacted for engine replacement... |
70800 mi US $700 |
Cooling tubes leaking/replaced Water pump failed/replaced |
87000 mi US $1384 |
The primary fuel pump was replaced because the car was losing power and not running properly Water pump replaced due to excessive noise - dealer felt that failure was impending |
122000 mi US $255 |
Engine torque arm replaced due to split busing noticed by dealer during 120,000 mile routine maintenance. |
59100 mi | Replaced leaking water pump because adding coolant weekly. Also replaced coolant tubes as preventive maintenance. Rough engine when accelerating, cleaned injectors. |
105000 mi US $2300 |
Original equipment plastic crossover coolant pipes cracked. Replaced with aluminum pipes. Also, ignition coils all replaced. |
48980 mi | Engine has scuffed cylinder and cracked coil packs. Estimated cost to replace engine now $27,000, so car has been sold as is. |
118000 mi | At 118K well-maintained miles developed bad knock. Dealer assessed scorched cylinder, apparently common. Quote for full rebuild $18K. Decided to junk it. Overrated Porsche - never again. My wife's Accord is @ 240K and going strong. |
106000 mi | cooling tubes repaired |
76660 mi C $400 |
Repair valve cover gaskets and another o ring on camshaft to stop small oil leaks. |
79140 mi | Replaced one ignition coil. |
93620 mi C $90 |
Replaced expansion tank on cooling system. |
94240 mi C $78 |
I set out to change the coolant pipes on the 2004 Porsche Cayenne's engine, only to discover that they had already been done. While I had it apart I changed the spark plugs (two of which had visible fouling) and coils, but discovered the eBay set of eight coils (I had used one to date) only had three more which worked, so still using four of the original, cracked coils, but they work fine, after much fussing with error codes. Total cost of this repair, $78.00 CDN for the plugs. From this my advice would be to go upscale in purchasing coils for a Cayenne. They are a pain to change because of the plastic covers, fragile vent hoses, and the engine mount which must be removed for access to #3. As well, one misfiring cylinder causes the entire bank to shut down because the ECU senses a risk to the O2 sensor and puts four cylinders into limp mode. |
97020 mi | 2004 Cayenne S started to miss badly while 50 miles from home, but finally it showed a code. Cylinder 2. I changed the coil from new Chinese ones I had on hand. The spark plug required re-torquing, strangely. This improved performance after a month of intermittent misfiring. Lesson: Don't buy bargain coils for this car. |
58000 mi US $150 |
camshaft sensor bank 2 |
76000 mi US $2200 |
Plastic water intake broke and need to be replaced. Part $800.00 for the kit and $2,000.00 labor with $300.00 discount. |
83080 mi ¤2800 |
Fuel vent valve replaced, 150 AED |
83700 mi | key did not come out start switch! Modified start switch so key will never being locked again! |
108500 mi ¤3000 |
After replacing spark plugs, car did not accelerate anymore. Damaged ignition coils! Replaced all 8 coils => OK now. (old model: 938-602-104-05 => new 948-602-104-20) |
112200 mi ¤932 |
Secondary vacuum pump replaced PN: 95560510511. |
114080 mi ¤5500 |
No fuel supply to ignition Replaced fuel filter + fuel pump Done in Muscat (Porsche Center Oman) Thanks to Mr. Francis |
247-horsepower 3.2L V6 6-speed shiftable automatic AWD w/low range
102000 mi US $1000 |
Replaced faulty plugs and coils on all cylinders. Apparently all were original, never having been replaced before. |
103000 mi | Left radiator fan running continuously due to control module failure. Replaced fan/module assembly. |