Table 1 shows one common other fuel system related problems of the 2018 Porsche Cayenne.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems |
The high-voltage battery pack in my 2018 Porsche Cayenne s e-hybrid (VIN: [xxx] , approximately 81,000 miles) has experienced a noticeable and progressive reduction in battery range and performance. On February 20, 2026, Porsche white plains (an authorized Porsche dealer) performed an inspection but was unable to duplicate an active fault code and declined to generate a battery state of health (soh%) report. No warranty repair was authorized. Porsche cars north America (pcna), case #xxx, has since moved to close my statutory warranty claim, citing the absence of a duplicated fault. However, under new york state's adopted carb emission warranty standards (6 nycrr § 218-9. 1), high-voltage propulsion batteries in tzev/pzev vehicles are warranted for 10 years or 150,000 miles from the date of original sale. My vehicle was placed in service in 2018 and remains within that statutory coverage window through 2028. Pcna has not addressed this statutory obligation or provided written confirmation of coverage. I also have not received the inspection documentation I formally requested on March 17, 2026, despite no case closure having occurred at the time of that request. As of the date of this filing, pcna has not responded to my follow-up correspondence. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
When trying to accelerate into traffic vehicle will experience what feels like a dead spot in the accelerator and then lurch forward at a high speed this condition has been reported on numerous complaint site concerning various Porsche vehicles and specificall concerning Porsche Cayenne dealer says car is fine. Unsafe to drive since you never know when it will accelerate.