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What 7 owners told NHTSA about the 2014 Porsche Cayman Gt4

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 (7)Fuel system (2)Airbags (1)Electrical system (1)Engine (1)Engine & cooling (1)Transmission & drivetrain (1)

1 of 7 complaints match · Engine · clear filters

Mar 9, 2018Electrical systemEngine

IGNITION COIL FAILURE ON CYLINDER #3 DUE TO NO HEAT SHIELD BETWEEN COIL & CATALYST WHICH IS SITUATED JUST BELOW THE COIL. THIS RESULTED IN SUDDEN LOSS OF POWER AND MISFIRES OF #3 CYLINDER. MECHANIC STATES THIS PROBLEM WILL HAPPEN AGAIN UNTIL A PROPER HEAT SHIELD IS INSTALLED BETWEEN THE COIL & THE CATALYST. I WAS IN TRAFFIC AT THE TIME ON A FREEWAY AT A SPEED OF 65 MPH.

NHTSA ODI 11078393

Working with the data? Download all 7 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 2014 Porsche Cayman Gt4 verdict →