PORSCHE Complaints

This is a 2025 Porsche 911. The car came equipped with "Land Keep Assist" also referred to as "LKA". In operation it is at times terrible, and at other times genuinely frightening. The system, without warning, intervenes to change the direction of the vehicle by applying steering input. It is very, very, inaccurate and unreliable. When engaged it often is fooled by gaps in road paint markings and similar imperfections. Unlike Electronic Stability Control which intervenes to assure you can maintain the line of travel suggested by steering wheel position, this system makes an independent assessment, one which in my experience is often wrong. It gets worse. In the control screen, LKA is a feature that you can check into the "off" position. The problem with this is the system resets on its own without a command from the driver. I have not figured out what causes this, whether it is time between use or some other measure. This reset happened to me yesterday. I was driving the car and the steering felt odd, with play in the feedback. Very, very disconcerting in any car, let alone a sports car where the driver wants the car to go where commanded. In my case, this uncertain feeling was felt on the Golden Gate Bridge where the lanes are very narrow (and the LKA system is very easily fooled). After a few minutes of the odd feeling I opened the menu on the center screen and saw that LKA had been ticked back on. A very close friend of mine has a 2025 Porsche Cayenne and has described the same problem. As noted above, I am very familiar with ESP systems and value them. I also own another car with a lane keep feature (an Acura) but which is accurate and ONLY is applicable when I affirmatively enable the feature while using the adaptive cruise control. While I would love for the ability to remove this feature, at a minimum when the owner exercises the election to turn it off, it should stay OFF -- i.e., not reengage without warning only to surprise the driver.

COMPONENT THAT FAILED: A high-pressure fuel injector (cylinder 2). The failed injector and engine wiring harness are available for inspection on request. The vehicle is currently at an authorized dealer. WHAT HAPPENED: While driving at approximately 35-45 mph under light throttle in normal traffic, the engine began misfiring without warning. The misfire worsened rapidly over several seconds and the engine ran roughly enough that I pulled off the road. A strong burning smell was present immediately afterward. The vehicle has continued to misfire since. SAFETY RISK: The failure caused a sudden and unexpected loss of engine performance while the vehicle was moving in traffic, with no prior warning. Had this occurred at highway speed, in a merge, or in an intersection, the loss of power could have created a serious hazard. The strong burning smell suggests unburned fuel reaching the exhaust system and overheating the catalytic converter, which raises a fire concern. CONFIRMED BY: Yes. An independent service center and an authorized dealer both diagnosed the failure. Ignition components were ruled out by swapping spark plugs and coils between banks; the misfire remained on the same cylinder. Compression and cylinder leakdown tested normal, confirming the engine is mechanically sound. Scan tool data with the engine off showed the bank 1 high-pressure fuel rail losing pressure rapidly while bank 2 held normal pressure, indicating a high-pressure fuel leak. The dealer confirmed the fault as a failed fuel injector. INSPECTED BY MANUFACTURER: The authorized dealer inspected the vehicle and submitted a goodwill assistance request to the manufacturer, which was declined without a stated reason. Not inspected by police or insurance. WARNING SIGNS PRIOR TO FAILURE: None. No warning lamps, messages, drivability symptoms, or oil consumption preceded the failure. The only illuminated indicator was the low fuel level lamp, which is unrelated. The check engine light illuminated a

Fuel smell filling the cabin due to cracked fuel pump. Likely associated with fuel pump cover recall notice (recall code AH06) Dealerships refused coverage.

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.

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.

Loss of power due to Injectors failure on acceleration. A reproducible pattern on HWY merges or passes for example. This is an issue that has been identified and experienced by other Porsche 992/718 owners. Issue discussed in the following thread: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

[XXX] the salesman at cars 4 your budget sold a 2016 Porsche VIN#[XXX] ON XXX to [XXX] DOBXXX. The vehicle's odometer was tampered with by [XXX] he had the miles rolled back by a friend of his. the customer has no idea this was done to the vehicle the miles were rolled back before the vehicle went to [XXX] auto auction were the vehicle went unsold [XXX] kept the vehicle and contiuned to drive it for persoal use before financing the vehicle to Mr. [XXX] for $19,000 ON XXX. [XXX] boss [XXX] Has knowledge of this transaction and was fine with it has long a [XXX] gave him a cut of the profits from the sale. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The left usb-c port does not work and the rearview camera image may not display when the vehicle is placed in reverse. As such, the vehicle fails to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

The contact owned a 2011 Porsche Panamera. The contact stated that while driving at 60 MPH, the steering wheel stiffened, the vehicle experienced a loss of motive power, gray smoke entered the cabin, and all warning lights illuminated. The contact immediately parked and exited the vehicle. A fire originated from under the passenger side of the engine compartment. The fire was extinguished using a fire extinguisher. A police report and a fire department report were filed. No injuries were reported. The vehicle was towed by the police department and was destroyed. The manufacturer was not notified of the failure. The failure mileage was 155,000.

The contact owns a 2019 Porsche Cayenne. The contact stated that while reversing, the rear-view camera displayed an unknown red warning message. The vehicle was taken to the dealer, but the contact was unsure if the vehicle was inspected. The dealer had not provided a diagnostic test information. The contact was informed that parts were unavailable. The contact received notification of NHTSA Campaign Number: 25V896000 (Back Over Prevention); however, the part to do the recall repair was unavailable. The manufacturer was made aware of the failure. The contact was informed that the parts were unavailable. In addition, the contact was informed that the parts would be available within two months. The failure mileage was approximately 46,000.