Home · 2021 Porsche Cayenne Diesel Platinum · Complaints

What 17 owners told NHTSA about the 2021 Porsche Cayenne Diesel Platinum

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 (17)Electrical system (5)Airbags (3)Brakes (2)Driver assistance (2)Engine (2)Steering (2)Transmission & drivetrain (2)Backup camera & sensors (1)Visibility & wipers (1)

2 of 17 complaints match · Steering · clear filters

Jun 18, 2026SteeringDriver assistance

Vehicle Information: 2021 Porsche Cayenne E-Hybrid (VIN: [XXX]) Description of Defect: While operating the vehicle, the steering column bolt physically backed out and detached, causing an immediate, complete loss of steering control. This exact mechanical failure mirrors NHTSA Safety Recall 21V-493 (Porsche Campaign AMB4), which addressed loose, under-torqued steering column bolts leaving the factory. My specific VIN was excluded from the narrow initial recall population, proving a factory tracking failure by the manufacturer. The authorized Porsche dealership confirmed the failure stating the bolt backed out due to "vibrations." A vital steering bolt backing out under normal road vibrations on a 2021 luxury vehicle is a severe manufacturing defect and a life-threatening public safety hazard. Injuries/Crash: No Fire: No Speed at incident: 25 mph INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11744923

Feb 24, 2022Steering

The contact owns a 2021 Porsche Cayenne. The contact stated that while driving from a complete stop, the steering wheel felt loose. There were no warning lights illuminated. The vehicle was towed to the dealer where it was diagnosed that the tie rod bolt, track bolt, and hexagon head bolt needed to be replaced. The contact stated that the vehicle was repaired; however, the failure persisted and the steering wheel was making abnormal sounds. The vehicle was taken to a second dealer - Porsche South Shore (185 W Sunrise Hwy, Freeport, NY 11520) who test drove the vehicle but could not determine the cause of the abnormal sounds. An unknown part was replaced. The contact stated that the failure reoccurred while driving and she could not control the vehicle. The vehicle was taken back to the second dealer. The vehicle was not repaired. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was approximately 750.

NHTSA ODI 11453894

Working with the data? Download all 17 complaints as CSV · fetched from NHTSA July 25, 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 2021 Porsche Cayenne Diesel Platinum verdict →