Table 1 shows one common power train related problems of the 2019 Porsche Cayenne.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
At approximately 52,000 miles, the vehicle experienced a sudden catastrophic transmission / driveline failure while in use. The failure created serious concern about safe operation and reliability and left the vehicle disabled or unsafe to continue driving normally. An authorized Porsche dealer evaluated the vehicle and stated that the repair would require replacement of the entire transmission assembly at very high cost. No practical parts-level repair option has been provided. I am reporting this because a sudden major powertrain failure at this mileage may indicate a safety-related defect.
While driving my 2019 Porsche Cayenne s on the freeway, the check-engine light came on, followed by a message on the dashboard that read “engine control fault – driving permitted – visit workshop. ” moments later, the vehicle suddenly lost power and decelerated from about ~75 mph to around 55 mph, even though my foot was still on the accelerator. I am [xxx] pregnant and had our [xxx] child in the car at the time. The unexpected loss of speed in fast-moving traffic was frightening. I had to quickly change lanes to reach the slower lane and avoid being hit by other vehicles. After reaching safety, I drove the car to an authorized Porsche dealership, where technicians found an active water-pump leak with coolant entering the vacuum system, which may have caused turbocharger and engine-power failure. This is after I replaced the water pump last year at another Porsche dealership. A photo taken during the incident shows the dashboard warning message as it appeared. This incident created a serious safety hazard, as the vehicle displayed “driving permitted” even though it was at risk of a sudden loss of propulsion at highway speeds. The car and the failed components are available for inspection. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
When car downshifts from 2nd gear to 1st gear, it lunges / jerks forward, even as brakes are applied. Porsche mechanic and Porsche cars north America both indicate nothing is wrong with the transmission. This is a constant issue. Everyday for the last two weeks. Every stop.
The vehicle lurches forward dangerously when coming to a complete stop. The brakes seem to release as the vehicle lurches forward.
When braking to a stop, the car lunges forward even when foot is on the brake. This occurs at slower speeds around 5mph right before a dead stop.