Home · 2017 Porsche 911 Targa 4s Heritage Edition · Complaints

What 3 owners told NHTSA about the 2017 Porsche 911 Targa 4s Heritage 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 (3)Electrical system (1)Engine (1)Visibility & wipers (1)

1 of 3 complaints match · Visibility & wipers · clear filters

Dec 17, 2024Visibility & wipers

The rear window seal is severely breaking apart, severely cracked and others are melting. This may affect condensation inside the vehicle and potentially be a safety hazard. Several reports on this problem can be seen at porsche forums. I believe this is a manufacturing defect and is a potential safety hazard on many porsche vehicles.

NHTSA ODI 11631125

Working with the data? Download all 3 complaints as CSV · fetched from NHTSA July 27, 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 2017 Porsche 911 Targa 4s Heritage Edition verdict →