Porsche Cayenne fuel pump problems

Filed Aug 11, 2026 · Electrical, Engine · TX

Nearly 25% of the total time I have owned this Certified Pre-Owned vehicle (146 out of 564 days), it has been non-functional and in the shop — roughly 1 out of every 4 days of ownership. I am a [XXX} with a [XXX] child, and I purchased this vehicle as a Certified Pre-Owned (CPO) Porsche — expecting the manufacturer's rigorous inspection and warranty to ensure reliability and safety. Instead, the first breakdown occurred within just 1 month of purchase, and the vehicle has since failed six separate times over 18 months (Feb 2025–Aug 2026), totaling 60+ days out of service, despite extensive component replacement: [XXX] (≈1 month after CPO purchase) – Battery failure; car would not start; towed at 2–3 AM. [XXX] – No-start; fuel tank drained/refueled ("improper additive"). [XXX] – Low fuel pump replaced. [XXX] – High fuel pump, all 6 fuel injectors, DME system replaced. [XXX] – Recurring no-start; repurchase denied May 7, 2025; Porsche later claimed root cause found (mechanical part) and replaced it. Aug 1, 2026–ongoing – Check engine light returned; misfire on cylinder 4 and coolant leak into vacuum system found. Dealer replaced coolant pump/vacuum components, updated DME software — check engine light reappeared on the dealer's own test drive. Why This Is Especially Dangerous: A CPO vehicle should not fail this quickly or repeatedly. It raised serious concern that either the inspection was inadequate or a pre-existing defect was never disclosed. My child rides in this vehicle regularly. A sudden stall or power loss at highway speed, at an intersection, or during school pickup/drop-off could cause a serious collision, endangering my child's life and my own. As a [XXX] with no backup driver/vehicle, an unexpected breakdown have cost lost work time, unreimbursed Uber expenses, and childcare disruptions. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 19, 2024 · Fuel system · CA

Catastrophic failure of Bosch CP4 high-pressure fuel pump in my 2014 Porsche Diesel Cayenne. Resulted in metal shavings/shrapnel throughout entire fuel system. Car abruptly stalled while pulling out of parking lot and was unable to restart. Had vehicle towed to nearest Porsche dealer for repairs. Quote for parts only (without labor) to repair vehicle is $29,440.47. With labor is in excess of $40,000. Car has been determined to be a total loss. My 2014 Porsche Diesel Cayenne has always been maintained at suggested intervals and all service work for the life of the car was performed by Porsche. It has been a wonderful, reliable and fun vehicle to drive prior to this horrible event. No warnings of fuel pump failure came up on vehicle warning and message system.

Filed Jun 5, 2023 · Fuel system · 213,697 miles · MI

The contact owns a 2006 Porsche Cayenne. The contact received notification of the federal safety agency Campaign Number: 17V576000 (Fuel System, Gasoline). The contact stated that the dealer retrieved the vehicle from the residence to perform the recall repair; however, the dealer confirmed that they were unable to access the fuel pump and fuel filter due to the corroded locking collars. The contact stated that after receiving the vehicle from the dealer, a fuel odor was detected while exiting the vehicle. Additionally, there was gasoline leaking underneath the rear driver's side tire onto the ground while the contact was at the gas station to refuel. The vehicle was towed to the residence. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 213,697.

Filed Dec 16, 2022 · Fuel system · TX

We purchased the 2005 Porsche Cayenne from my brother-in-law in August of 2022. He had owned the vehicle for at least a year before I purchased it from him. Shortly after the purchase, I noticed the engine light came on. On 09/12/22 a strong smell of fuel was emitting from the vehicle in a Walmart parking lot in Denton, Texas at approximately 1030pm. I noticed a large puddle of gasoline on the ground under the vehicle and it was steady stream of fuel while the vehicle was running. The vehicle was completely unsafe to drive for fear of ignition and fire. Due to the time and location, I had the vehicle towed to my mechanic approximately 3 miles away for diagnosis and/or repair. The closest Porsche dealership was approximately 25 miles away and the tow bill would have been excessive. Mechanic identified the problem as a cracked fuel filter flange/housing that sat on top of the fuel pump. The cracked fuel housing was replaced and the total for parts and labor was $462.48. No leaking fuel since repair. A few weeks later my brother-in -law contacted me and advised he had just received a recall (OCTOBER 2022) in the mail from Porsche for the exact part I had repaired (17V‑576 / AH10). He mailed me the recall and I contacted Porsche for a reimbursement. They stated they only refund for repairs done at a Porsche dealership. I believe Porsche should cover the repair cost for their faulty equipment even after the recall was received. A Porsche Service Center would charge Porsche Corporate much more for this repair than what I paid. Please assist me in getting a refund for my expense of ($462.48) for the repair of Porsche's recall. Thanks [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Nov 11, 2022 · Fuel system · IL

There is a significant smell of gasoline inside the cabin of the vehicle. There was a recall on the same make, model, and year for fuel pump filter flange leaks, which are indicative of a strong smell of gas inside the car. This can potentially cause the car to start on fire. The dealer stated due to the VIN, the vehicle was not covered under the existing recall.

Filed Dec 20, 2020 · Fuel system · 119,000 miles · CA

Engine has cutoff on 3 occurrences: (1) operating the vehicle on the freeway at 70 MPH and experienced immediate loss of power. I was able to manuever the vehicle to the shoulder while coasting without engine power. I was able to start the engine but it cutoff a few seconds after. The vehicle had to be towed to an independent porsche repair shop where the high pressure fuel pump was replaced. (2) the engine cutoff while operating on city street at 40 MPH. I was able to manuever the vehicle while coasting without power or power steering into a parking lot. The engine would start but cutoff a few seconds later on multiple attempts. The vehicle has to be towed to the same independent porsche repair shop where the high pressure fuel sensor was replaced. This occurrence was the first time operating the vehicle after returning home from the high pressure fuel pump replacement service. (3) operating the vehicle while stopped at an intersection at a red light. When attempting to accelerate the engine cutoff and I was stalled for about 1 minute blocking traffic. I was able to restart the engine after a few attempts and drive the vehicle the remaining 2 miles home without incident. All 3 occurences involved abrupt engine cutoff and loss of power steering. The porsche independent repair shop is unable to pinpoint the issue. The risk exposure to accident is high when engine cutoff occurs while the vehicle is in motion.

Filed Sep 18, 2020 · Fuel system · 24,172 miles · IL

Overnight fuel pressure loss results in extended crank cycle. Despite 6 service visits between two chicagoland area porsche dealerships, the vehicle has not been satisfactorily repaired. Fuel pressure loss was confirmed on multiple occasions by the semersky's porsche exchange in highland park, illinois. Fuel pumps were apparently replaced, the last time damaging the seat clips under the second row bench seat. Fuel pressure loss has slowed, but still occurs when fuel tank is more than 3/4 empty. This vehicle is covered by manufacturer warranty and the problem became apparent at 24k miles.

Filed Jan 29, 2020 · Fuel system · CA

Porsche recalled this fuel pump (17v‑576) after I replaced for the same reason it was recalled. I've contacted porsche several times and they still have not addressed replacing the fuel pump filter flange. It's been more than 2 years now? What can I do?

Filed Feb 21, 2019 · Fuel system · 118,435 miles · PA

09/19/2017 porsche of lehigh valley (formerly knopf porsche) fuel smell coming from vehicle. Found left side fuel filter flange leaking. Replaced left side fuel filter flange for $709.04. 12/08/2017 porsche of lehigh valley car hesitates and bucks, since the fuel odor repair was completed on 09/19/2017 porsche of lehigh valley replaced left and right side fuel pumps, fuel pressure regulator flange , and transfer lines between 2 fuel pumps for $$879.80. Letter from porsche cars north america, inc. 'important safety recall' dated 11/29/2017 received 1 week after porsche of lehigh valley (formerly knopf porsche) completed second repair and charged me for a total of $1588.84 so you know that porsche of lehigh valley (formerly knopf porsche) knew full well that the recall was underway but just wanted to meet 4q/ye goals. 02/20/2019 in week seven (7) of (10) ten after weekly calls to script following customer service agents of epiq global (contractor for porsche cars north america, inc. Recall processing), who escalate calls upon request to a supervisor from epiq global, only to have a project coordinator call with their personal cell phones and leaving generic messages without a direct call back number. 02/20/2019 now in week seven (7) of (10) ten, I finally picked up a random number of the 3rd project coordinator and discussed how they will only reimburse me for the left side fuel filter flange replacement. 12/27/18 I submitted my claim form and epiq global (contractor for porsche cars north america, inc. Recall processing) confirmed receipt on 12/31/2018 reiterating in writing a 4-10 week process. 02/21/2019 18 months after initial repair I receive an email from epiq global confirming they will not reimburse the 09/19/2017 porsche of lehigh valley replaced left & right side fuel pumps, fuel pressure regulator flange, & transfer lines btwn 2 fuel pumps $879.80

Filed Jan 3, 2019 · Fuel system · UT

I received a recall letter in november of 2017 the federal safety agency campaign number: 17v576000. Fuel pump flange may crack causing fuel leak a fuel leak in the presence of an ignition source increases the risk of a fire. My local dealer keeps telling me no parts available. I find the timeline unacceptable and I want the recall remedied immediately. We are pushing two years with no repair.