2021 Porsche Cayenne

21 complaints on file, page 1 of 2.

1. Filed Aug 31, 2026Failure Aug 27, 2026weymouth, MAEngine, Fuel/propulsion system

   On my 2021 Porsche Cayenne Base, which is equipped with the 3.0L V6 EA839 engine, I brought the vehicle to the dealership for a recall service. During inspection, the dealership found a leaking water pump and quoted $8,500 for repairs. There were no visible signs of a coolant leak on the ground, indicating an internal seal failure. My independent technician confirmed that coolant is leaking internally into the vacuum system. This EA839 engine architecture is shared across multiple Volkswagen Group models, including Audi A6, A7, A8, Q7, and Q8, where this water pump internal leak is a known, widespread manufacturer defect that has already triggered class action lawsuits.

   NHTSA complaint 11760942
2. Filed Aug 31, 2026Failure Aug 18, 202614,000 milesOmaha, NESeat belts

   The contact owns a 2021 Porsche Cayenne. The contact stated that while driving at various speeds, the front driver's side seat belt independently tightened and loosened. The emergency light illuminated, and a seat belt warning chime sounded continuously. The vehicle was taken to a local dealer, where it was diagnosed that the seat belt assembly needed to be replaced. The vehicle was not repaired and remained at the local dealer. The manufacturer was notified of the failure. The failure mileage was approximately 14,000.

   NHTSA complaint 11760839
3. Filed Aug 25, 2026Failure Aug 25, 2026Alpharetta, GAAir bags, Unknown or other

   Over approximately the past month, the leather covering on the dashboard of my 2021 Porsche Cayenne has rapidly begun lifting, buckling, and separating across a substantial portion of the dashboard. The deformation has become increasingly pronounced in a short period of time despite normal use and careful maintenance of the vehicle. I am concerned that this may present a safety issue because the passenger airbag deploys through the dashboard area. The dashboard material is visibly distorted and separating, and I am concerned that this deformation could potentially interfere with the intended deployment path or performance of the passenger airbag in a collision. This does not appear to be normal cosmetic wear. The affected area is not routinely touched or subjected to ordinary wear, and the condition developed quickly on a relatively recent vehicle. I have also found reports from other owners of similar Porsche Cayenne model years describing comparable dashboard leather lifting, bubbling, warping, or delamination. Because of the location of the defect and the potential relationship to the passenger-airbag deployment area, I am requesting that NHTSA review this condition as a possible safety-related defect. I have contacted Porsche Cars North America regarding the issue and am seeking inspection and repair through an authorized Porsche dealer.

   NHTSA complaint 11759576
4. Filed Aug 6, 2026Failure Aug 2, 2026Montgomery, ALElectrical system

   Battery completely discharged and the safety switch in the battery malfunctions and battery can not be charged again. There are many complaints seen online about the battery problems Porsche has. This strands the car and me the driver. The dealer and independent mechanics said the same. There were no warning lamps or messages prior to the failure.

   NHTSA complaint 11755286
5. Filed Jun 18, 2026Failure Jun 4, 2026Sugar Land, TXAdaptive cruise control, Steering

   Vehicle Information: 2021 Porsche Cayenne E-Hybrid (VIN: [XXX]) Description of Defect: While operating the vehicle, the steering column bolt physically backed out and detached, causing an immediate, complete loss of steering control. This exact mechanical failure mirrors NHTSA Safety Recall 21V-493 (Porsche Campaign AMB4), which addressed loose, under-torqued steering column bolts leaving the factory. My specific VIN was excluded from the narrow initial recall population, proving a factory tracking failure by the manufacturer. The authorized Porsche dealership confirmed the failure stating the bolt backed out due to "vibrations." A vital steering bolt backing out under normal road vibrations on a 2021 luxury vehicle is a severe manufacturing defect and a life-threatening public safety hazard. Injuries/Crash: No Fire: No Speed at incident: 25 mph INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11744923
6. Filed May 11, 2026Failure Feb 12, 2026Indianapolis, INElectrical system, Visibility/wiper

   Instrument cluster anti-glare film or delamination on center and left instrument cluster. The film is wearing away in certain irregular sport and shapes. The overall wear is impacting the visibility to the center cluster under certain conditions leading to obscure visibility to important information, including vehicle speed or other warning light. It has been raised to the dealer, then to Porsche NA, but the dealer has stated they (Porsche NA) will not cover the repair, even though the vehicle is under a CPO warranty. This first started appearing this year and has gotten worse over time. No unusual cleaning, harsh chemicals or other abrasive object were used. The nature of film is slick issue is inconsistent with this and does not appear on other parts of the user interface - just the more important ones. Porsche NA initially blamed the dealership, and then later denied my claim and now escalating.

   NHTSA complaint 11737123
7. Filed Mar 10, 2026Failure Nov 15, 202548,000 milesMaricopa, AZBack over prevention

   The contact owns a 2021 Porsche Cayenne. The contact received notification of NHTSA Campaign Number: 25V896000 (Back Over Prevention); however, the part to do the recall repair was not yet available. The contact stated that while in reverse(R), the rearview camera failed to display a clear image on the screen. No warning light was illuminated. In addition, the rear vehicle detection sensor failed to alert the driver of a nearby vehicle. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 48,000.

   NHTSA complaint 11723260
8. Filed Oct 9, 2025Failure Jul 3, 202590,000 milesDenver, PASpeedometer/odometer

   Odometer Fraud. The contact purchased a 2021 Porsche Cayenne. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase on 5/29/25, the mileage was 21,000. The contact had taken the vehicle to another dealer for other repairs, and the dealer informed the contact that the vehicle was flagged for Odometer Fraud, and the actual mileage was 90,000. The dealer found an odometer tampering device still located on the vehicle, but deactivated the device. The contact called the State Attorney General's Office for New Jersey.

   NHTSA complaint 11692345
9. Filed Sep 30, 2025Failure Sep 2, 2025Camarillo, CAAir bags

   I am reporting a safety defect with my 2021 Porsche Cayenne GTS. The leather dashboard is delaminating and lifting away from its underlying structure. This defect is concerning because: The delamination is occurring on the drivers side but will eventually expand in the area covering the passenger-side airbag. If the airbag deploys, the raised/lifted dashboard material may interfere with or obstruct proper deployment, posing a serious risk to passenger safety. Porsche Cars North America (PNA) has been notified, but they classify this issue as “cosmetic” and refuse to repair it voluntarily under warranty or goodwill. Furthermore, The issue was not disclosed by the dealer at purchase. I have consulted two Porsche dealerships, both of which confirmed Porsche considers this a cosmetic defect not covered by the Certified Pre Owned warranty. However, given the location and potential interaction with the airbag system, I strongly believe this constitutes a safety-related defect that requires investigation. Online forums show this is a common issue across many models made by Porsche during this time but specifically SUV's. I am requesting that NHTSA investigate this issue to determine whether the delaminating dashboards in Porsche Cayenne models create a safety hazard that requires a recall and mandatory repair.

   NHTSA complaint 11690525
10. Filed Jun 27, 2025Failure Jun 20, 2025Pace, FLAir bags, Unknown or other

    Dashboard leather is separating and was told this could affect the airbag deployment in the case of an accident. Porsche dealership is asking 10k outside of warranty to replace the dash. If it was just cosmetic I could deal with it, but now that it is a safety concern for my passenger I feel forced to overspend. Even a reduced amount would help but a whole dash replacement sounds excessive to make sure the leather is not obstructing the airbag.

    NHTSA complaint 11669823
11. Filed Jun 8, 2024Failure Jun 8, 2024New York, NYElectrical system, Adaptive cruise control

    Much like thousands of Cayenne drivers, I am constantly let down by an ongoing issue with Adaptive Cruise Control failures with an error message that reads, “Adaptive Cruise Control unavailable.” THIS MAY CAUSE SERIOUS INJURY OR DEATH IF NOT REPAIRED AS VEHICULAR COLLISION RATES INCREASE DRAMATICALLY TO NO AVAIL. Porsche dealers are notoriously recalcitrant about taking adequate responsibility for these failures. The cost of repairing Porsche’s poor craftsmanship is either prohibitive or they are disinterested in repairing these problems within an acceptable timeframe. It is long past due for the Federal government to intervene and compel Porsche to recall and repair their Adaptive Cruise Control failures. I had my cameras recalibrated three (3) times in three (3) weeks and yet the problem persists without meaningful redress. HELP!

    NHTSA complaint 11593255
12. Filed Sep 8, 2023Failure Mar 22, 2023Plano, TXElectrical system

    I was driving the auto and parked in my garage without any indication of a fault. I attempted to start the car about 30 minutes later and the car would not start and gave an error message that said "change driver" I tried both keys and neither would allow the car to be started. There was no starter noise indicating a weak battery. I had to have the car towed to the dealer after the tow company found a way to unlock the drive shaft with a key that is part of the car service tools. I could not move the car if I had stopped on a roadside. The dealer had never seen this issue before. The car was in the shop for a week to correct the fault from March 23 to March 31. The dealer claimed it was a software fault. There were no warning indicators or messages that something was wrong with any component or system.

    NHTSA complaint 11543394
13. Filed Jul 8, 2023Failure Mar 9, 2023San Juan, PRElectrical system, Engine

    Problem with the hybrid system and the engine control system. Unit changed automatically and unexpectedly from battery power mode to engine power mode when on battery power mode only. This change is not supposed to happen. This failure happened when starting the unit, put on drive and starting to move forward. This failure caused the unit to charge forward with more power unexpectedly. Causing almost to collide. At the time of the failure “engine control system” warning and “e power not available” warning lid up. The unit has been for service for 10 times with the same warnings powering up. At this time the unit has been on service for almost four month.

    NHTSA complaint 11531025
14. Filed Oct 12, 2022Failure Oct 6, 2022miromar lakes, FLAir bags

    The car is notifying me that the drivers airbag is not working. the message that appears is: “Airbag system error, please visit workshop”

    NHTSA complaint 11488919
15. Filed Aug 13, 2022Failure Aug 13, 2022Auburn, ALUnknown or other

    othe car's tach increase several hundred RPM as the computer tries to match revs when downshifting from 3rd to 2nd gear in Normal Mode and 2nd to 1st gear in Sport Mode.. When that happens, the car lurches forward. owhat seems to be happening is the engine is over-revving while disengaged from a gear on shifts from 3rd to 2nd and even more so on 2nd to 1st causing a lurch forward when the lower gear engages

    NHTSA complaint 11479124
16. Filed Feb 24, 2022Failure Aug 9, 2021750 milesAstoria, NYSteering

    The contact owns a 2021 Porsche Cayenne. The contact stated that while driving from a complete stop, the steering wheel felt loose. There were no warning lights illuminated. The vehicle was towed to the dealer where it was diagnosed that the tie rod bolt, track bolt, and hexagon head bolt needed to be replaced. The contact stated that the vehicle was repaired; however, the failure persisted and the steering wheel was making abnormal sounds. The vehicle was taken to a second dealer - Porsche South Shore (185 W Sunrise Hwy, Freeport, NY 11520) who test drove the vehicle but could not determine the cause of the abnormal sounds. An unknown part was replaced. The contact stated that the failure reoccurred while driving and she could not control the vehicle. The vehicle was taken back to the second dealer. The vehicle was not repaired. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was approximately 750.

    NHTSA complaint 11453894
17. Filed Feb 23, 2022Failure Dec 1, 2021Miromar Lakes, FLEngine, Power train

    While coming to a stop the vehicle lurches around 1200 rpms as the rpms are falling. The vehicle appears to already be in 1st gear when this happens. This can be replicated in all driving modes. observation: when braking or even when coasting to a stop the vehicle will slow down rapidly, as if the brakes are being tapped hard (the brake pressure is constant and occurs even when not braking) for a brief second and then release causing a lurching motion. This lurching motion is enough to concern while driving as a possible loss of traction. it feels as if the car is engine braking. This issue puts the driver, passengers, and other vehicles at a safety risk. I have had passengers state that it gives them motion sickness. I have reported this to the dealer and they had the car twice. The second time was for a substantial amount of time. The dealer is on record stating that they can recreate it, observe it, but have not been able to fix it. they have reset the software on several systems including the transmission. there are no third party devices on the car, the car is stock, there are no warning lights.This has been the case since day one of having the car (brand new).

    NHTSA complaint 11453559
18. Filed Nov 8, 2021Failure Nov 7, 2021east rockaway, NYService brakes

    when decelerating and car is in gear 2 it lurches the car forward while braking, basically fighting the attempt to slow the car down. I attribute this to aggressive downshifting, but is a safety issue because the operator then needs to compensate by pressing down on the brake pedal harder to stop the car. This has happened inconsistently when driving, but occurs more frequently than not.

    NHTSA complaint 11439658
19. Filed Sep 17, 2021Failure Jun 28, 2021West Hills, CAUnknown or other

    On my Porsche Cayenne e-Hybrid model, the check engine light came on at less than 1000 miles. Porsche does not know why this happens but I've heard them claim that it's a software problem that has to do with how the car communicates with the charging system. Based on my research, there has been many other owners of the same vehicle with this problem. My vehicle has been in the shop for well over 30 days and Porsche still doesn't know what to do.

    NHTSA complaint 11433317
20. Filed Sep 16, 2021Failure Sep 15, 2021Portola Valley, CAPower train, Service brakes

    When the vehicle is decelerating and the transmission is in gear 2 the vehicle will lurch forward interfering/fighting with the normal operation of the brakes. This consistently happens when braking to a stop. The vehicle has 260 miles and I have driven it perhaps 4 - 5 times for a total of 30 miles. This is demo vehicle bought from a Porsche dealership and under full warranty.

    NHTSA complaint 11433244