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What 17 owners told NHTSA about the 2021 Porsche Cayenne Diesel

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)

1 of 17 complaints match · Visibility & wipers · clear filters

May 11, 2026Electrical systemVisibility & wipers

Instrument cluster anti-glare film or delamination on center and left instrument cluster. The film is wearing away in certain irregular sport and shapes. The overall wear is impacting the visibility to the center cluster under certain conditions leading to obscure visibility to important information, including vehicle speed or other warning light. It has been raised to the dealer, then to Porsche NA, but the dealer has stated they (Porsche NA) will not cover the repair, even though the vehicle is under a CPO warranty. This first started appearing this year and has gotten worse over time. No unusual cleaning, harsh chemicals or other abrasive object were used. The nature of film is slick issue is inconsistent with this and does not appear on other parts of the user interface - just the more important ones. Porsche NA initially blamed the dealership, and then later denied my claim and now escalating.

NHTSA ODI 11737123

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 verdict →