Parts information for parts withdrawal involving the transmission oil. Part number 00004321012 is affected - the vehicles that use this part number should be included.
full bulletin at NHTSA ↗2011 Porsche Cayenne powertrain problems
moderate 16 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
16
Recalls
0
Avg fix
$2,500
When does it fail?
Of the 16 powertrain complaints filed for the 2011 Porsche Cayenne, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Powertrain accounts for 26% of all owner complaints filed against this vehicle, across 3 categories tracked.
No new NHTSA powertrain complaint has been filed on this vehicle in over 7 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Parts information for parts withdrawal involving the transmission oil. The vehicles affected are ones that use the part number 00004330563
full bulletin at NHTSA ↗Parts information for parts withdrawal involving the transmission fluid. Part number 00004321048. The cars affected are ones that use the part number listed.
full bulletin at NHTSA ↗Parts information for parts withdrawal involving the (00004321048) Transmission fluid. The vehicles affected are ones that use the part number mentioned.
full bulletin at NHTSA ↗Parts information for parts withdrawal involving the 7 speed dual clutch gear box. Part numbers 0BG300047 and 0BG300047X are affected. Cars that are involved are ones that use the part numbers mentioned.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Transfer case failures dominate this cluster. Porsche's own workshop bulletin confirms the root cause: the original vent hose design allows moisture into the case, contaminating the multiplate wet clutch and causing corrosion. Porsche revised the hose design (part 958-301-047-10) to route the outlet upward, but owners report this fix came too late and does not stop repeat failures.
The symptoms are consistent—grinding, jerking, surging, and sudden power loss—often during critical moments like highway acceleration, roundabouts, or low-speed turns. Multiple owners describe nearly causing accidents. One owner reported the transfer case issue causing uneven tire wear and requiring tire replacement.
Failure timing varies, but most occur in the 46K–80K mile range. What's striking is repeat failure: one owner had two replacements (at 46K and 58.5K miles) and is now facing a third at 76K. Even updated units installed after 2018 with new control modules and GNC-coated plates have failed within 17K miles.
Repair cost runs $5000+ per unit. Porsche service departments acknowledge this is a widespread, well-known issue and keep transfer cases in stock. Yet Porsche officially denies awareness of a systemic problem. Some owners received coverage under an extended warranty campaign; others fell just outside the window. No permanent fix or recall has been issued, and the owner manual does not call for preventive transfer case fluid changes.
Same Porsche Cayenne powertrain reports on nearby years: 2012 · 2013 · 2014
Failure modes owners describe
Transfer Case Moisture Ingestion & Wet Clutch Corrosion
Original vent hose design allows moisture to be drawn into the transfer case, contaminating the multiplate wet clutch fluid. Moisture causes corrosion and rust formation on clutch plates, causing premature binding and erratic operation.
When: Reported across model years; failures occur in the 46K–80K mile range; some repeat failures 12K–17K miles after replacement
Symptoms owners cite: Grinding or jerking sensations during acceleration and turning; Shuddering and loss of power when accelerating or turning; Surging and sudden jerks while driving, especially on highways; Hesitation or pausing during acceleration transitions (3–4 gear shifts); Vehicle feels like going over a speed bump above 18 mph; Uneven braking feel with locking sensation in front wheels
Repairs/costs cited: Owners report transfer case replacement cost $3944–$5000+ parts and labor; some required tire replacement due to differential tread wear from erratic power delivery; vent hose replacement (part 958-301-047-10) included in updated design but not included on older cases out of warranty
Recalls/TSBs owners mention: Porsche issued a workshop bulletin (WB) directing mechanics to replace the original vent hose with revised part 958-301-047-10, which routes the hose outlet to the upper side of the transfer case rather than the lower side. Some owners received transfer case replacements with updated control modules and GNC-coated plates (2018+), but these have also failed. Extended warranty campaign documented; some owners reported being one year outside this coverage window. Porsche service advisors acknowledge keeping transfer cases in stock due to frequency of failures, but manufacturer denies knowledge of systemic problem despite dealer acknowledgment.
Transfer Case Premature Wear & Repeated Failures
Even after replacement with updated parts, transfer cases fail again within 12K–25K miles, suggesting the root cause (moisture ingestion) is not fully resolved or affected by lack of preventive fluid maintenance.
When: Second and third failures occur 12K–25K miles after replacement; one example: replaced at 46K, failed again by 58.5K; replaced at 58.5K, failed again by 76K (17K miles later)
Symptoms owners cite: Grinding noise from transfer case; Surging and jerking on acceleration and in turns; Loss of power and hesitation; Clunking in reverse
Repairs/costs cited: Multiple replacement cycles documented; owners cite $5000–$6000 per replacement; dealer mechanics report this is a well-known issue across 2008–present Porsche SUVs (Cayenne and others)
Recalls/TSBs owners mention: Updated transfer cases (2018+) with new control modules and GNC-coated plates installed on replacement units have not eliminated recurring failures; no permanent fix identified or offered; manufacturer reportedly does not reply to owner inquiries regarding permanent solution
Loss of Drive Power & Sudden Jerking—Safety Risk
Transfer case failures cause abrupt loss of power, jerking, and surging during driving—particularly dangerous when accelerating from stops, on roundabouts, at highway speeds, or during turns. Risk of accident due to sudden speed loss or unexpected power surge.
When: Failures occur at various speeds and driving conditions; specific examples: city street turning from stop sign, roundabouts, highway driving, parking lot turns, low-speed stops (3 mph)
Symptoms owners cite: Sudden jerking and surging; Unexpected loss of power during acceleration; Vehicle lurches forward suddenly; Shuddering and hesitation; Uncontrolled speed changes on curves and roundabouts
Repairs/costs cited: Safety-critical failures; owners report fear of driving vehicle and concern over family safety; one owner reported near-accident on roundabout due to sudden speed reduction; potential for rear-end collision or loss of control at highway speed
Recalls/TSBs owners mention: No recall issued as of complaint dates; Porsche acknowledged related defect through workshop bulletin and vent hose revision, but no broad safety recall announced; warranty campaign extended on some model years but expired coverage for others; manufacturers denies knowledge of problem despite widespread dealer acknowledgment
Synthesized from 16 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
Tl* the contact owns a 2011 Porsche cayenne. While driving various speeds, the contact depressed the accelerator pedal and the vehicle started to jerk. There were no warning indicators illuminated. The vehicle was not taken to a dealer to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 80,000.
Transfer case failure. There is an acknowledgment by Porsche of an associated defect of the transfer case design and a related workshop bulletin (wb) when replacing the transfer case. Porsche mechanics are instructed to replace a "vent hose" for the transfer case. This newly revised design part number for the revised vent is 958-301-047-10. The reason: the original design for cayenne 958 Porsche…
Transfer case has failed, jerking and interruption of accelerations. Almost caused a wreck. Very well known problem and there are a lot of similar complaints on the NHTSA complaint log system as well as documented online. I called Porsche and they denied knowing about any problem with it but you can call the service departments at any Porsche dealer and they immediately know about the problem.…
Had powertrain trouble with your 2011 Porsche Cayenne?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2011 Porsche Cayenne?
It's a documented issue but not catastrophic. 16 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 13 complaints that reported odometer mileage, most powertrain failures cluster between 50,000 and 75,000 miles, with the median around 65,000. A quarter of owners report trouble before 50,000; a quarter make it past 75,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Porsche/Cayenne.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.