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What 21 owners told NHTSA about the 2020 Porsche Cayenne Coupe Platinum Edition

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (21)Crash / fire / injury (2)Brakes (5)Engine (5)Electrical system (4)Transmission & drivetrain (4)Airbags (3)Seat belts (2)Speed control (2)Backup camera & sensors (1)Driver assistance (1)Visibility & wipers (1)

2 of 21 complaints match · Seat belts · clear filters

Apr 29, 2026AirbagsSeat belts

Seat belt and airbag indication lights and sound alarms remain on and notifying on the dashboard regardless of buckling. It will intermittently stop and start as the car is in motion. In the beginning, notification was present then resolved day-to-day. More recently, the alarm is present every drive. Driver was unsure whether or not the notifications were valid or not as the pattern of notification had little consistency. Dealership service later admitted that it was a faulty seat belt buckle and that part had failed internally, but refused to remedy it unless paid for. Car is essentially inoperable and unsafe until faulty buckle is replaced, as a faulty seat belt buckle can be fatal, with faulty implying a manufacturing issue and not of user misuse or abuse of systems. Manufacturer will not provide warranty and dealership continues to demand vehicle owner to pay.

NHTSA ODI 11734672

Apr 16, 2026Seat belts

The contact owns a 2020 Porsche Cayenne. The contact stated that the front driver’s side seat belt failed to buckle and became unusable. The dealer and the manufacturer were notified of the failure. The contact was advised to schedule an appointment for the vehicle to be repaired at the owner's expense. The vehicle was not diagnosed or repaired. The contact related the failure to an unknown recall. The failure mileage was approximately 68,000.

NHTSA ODI 11731520

Working with the data? Download all 21 complaints as CSV · fetched from NHTSA July 14, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Porsche Cayenne Coupe Platinum Edition verdict →