Home · 2021 Porsche 911 Turbo S Cabriolet · Complaints

What 5 owners told NHTSA about the 2021 Porsche 911 Turbo S Cabriolet

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 (5)Crash / fire / injury (1)Fuel system (3)Equipment Adaptive/mobility (1)Seats (1)

1 of 5 complaints match · Equipment Adaptive/mobility · clear filters

Jun 11, 2021Equipment Adaptive/mobility

2021 Porsche 911. Consumer writes in regards to missing computer chip for proper steering.

NHTSA ODI 11420618

Working with the data? Download all 5 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 2021 Porsche 911 Turbo S Cabriolet verdict →