There are 1 owner-reported electrical system complaints for the 2005 Porsche 911in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
ENGINE IGNITION COILS FAIL DUE TO CRACKS AND CORROSION. THE CAR WILL NOT EXCEED @ 20 MPH, THUS PUTTING THE OCCUPANTS AT RISK. THIS IS A PROBLEM OTHER PORSCHE OWNERS HAVE ALSO EXPERIENCED. PORSCHE REPLACED 6 COILS ON MY VEHICLE ALL IDENTICAL TO THE ORIGINAL UNITS WHICH FAILED. THUS THE VEHICLE WILL AGAIN FAIL IN TRAFFIC. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on May 4, 2026