Thinking about buying a used Porsche Cayenne (2002–2018) in New Zealand? We've documented 22 known faults for this model spanning engine, cooling, transmission, and fluid leaks. Each researched and verified before it's published. The most serious issues here are rated critical. Two are set out in full below — the rest, with the symptoms, repair costs and checks for each, are free with an account.
22
Documented faults
Critical
Most serious
$1,200–$4,000
Typical repair
6
Systems covered
Known Porsche Cayenne faults
Every fault below is documented specifically for this model — researched and verified before it’s published.
01V8 cylinder bore scoring (955/early 957)
CriticalOccasionalEngine $5,000–$15,000 to fix
The 4.5 and early 4.8 V8 Cayennes (roughly 2003 to mid-2008) can suffer cylinder bore scoring, where a cylinder wall wears/scratches, causing high oil consumption, misfires and lost power, and ultimately an engine rebuild. Porsche improved the coating in mid-to-late 2008, so V8s from 2009 on are lower risk. Heavy oil use on an early V8 Cayenne is a serious warning.
Symptoms to notice
Using oil between services (a litre per 1000-1500 km or worse)
Misfires, rough running or a cold knock
Blue smoke from the exhaust
Loss of power
What to check
Ask how much oil it uses between services; heavy consumption on an early V8 points at bore scoring. Look for blue smoke on a hard pull and check for misfire codes. A cold-start knock from one bank is a bad sign. A compression/leak-down test or borescope by a Porsche specialist is the definitive check before buying an early V8.
Where to look: Cylinder bores in the V8 engine (commonly cylinders on one bank)
Ask the seller
“How much oil does it use between services?”
“Any misfires or a cold knock?”
“Has it had a compression or borescope check?”
02PCM infotainment and 12V battery faults (9YA/E3)
MinorOccasionalElectrical $300–$2,000 to fix
The 9YA Cayenne's large PCM touchscreen and array of electronics can suffer freezes, reboots and connectivity dropouts, and owners report 12V battery drain when cars are left standing. Most are cured with software updates and a healthy battery. It is a convenience issue rather than a mechanical risk, but worth confirming everything works.
Symptoms to notice
Touchscreen freeze or reboot
CarPlay/connectivity dropouts
Flat 12V battery after standing
Random warning messages
What to check
Exercise the PCM screen, cameras and phone connection on the drive, watching for freezes and dropouts. Ask whether the car has ever gone flat standing and how old the 12V battery is. Confirm software is up to date and any recalls done. Note anything intermittent.
Where to look: Central PCM touchscreen, infotainment modules and 12V battery
Ask the seller
“Does the screen ever freeze or reboot?”
“Has the 12V battery gone flat while parked?”
“Is the software up to date?”
EngineCritical
EngineCritical
CoolingCritical
CoolingCritical
CoolingCritical
EngineMajor
TransmissionMajor
EngineMajor
Fluid LeaksMajor
EngineMajor
SuspensionMajor
TransmissionMajor
SuspensionMajor
SuspensionMajor
CoolingMajor
CoolingMajor
SuspensionMajor
CoolingMajor
SuspensionMajor
EngineMajor
20 more documented faults on the Porsche Cayenne
Symptoms, what to check, where to look and what to ask the seller — for every fault above. Free with an account, no card needed. One account covers one vehicle, so make it the car you’re actually looking at.
This page covers the model. Enter the plate of the actual car you’re looking at and see its year, engine, safety rating and register flags — free, no account needed.
Like any used car, it depends on the specific example and its service history. Across the 22 documented faults for the Porsche Cayenne, the recurring problem areas are engine, cooling, and transmission. A Porsche Cayenne with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.
What are the most common problems with a used Porsche Cayenne?
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We've catalogued 22 known faults for the Porsche Cayenne, covering engine, cooling, and transmission. Two are written out in full on this page. The rest — with the symptoms to notice, what to inspect, and typical repair costs for each — are free once you create an account.
How much do repairs cost on a Porsche Cayenne?
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Most single repairs on the Porsche Cayenne fall between $1,200–$4,000 at NZ independent-workshop rates. Some of the 22 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.
Should I get a pre-purchase inspection on a Porsche Cayenne?
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Yes. A Porsche Cayenne inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $17.90 far less than the cost of missing one of the faults on this page.