RoadVitals

2018 Porsche 718 Cayman Owner Complaints

Reports submitted to NHTSA by owners and drivers, shown in full

Data refreshed

Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
1
+1 complaint in 30 days
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
1
Reports on file since Oct 16, 2026

What this page shows

Our database holds 1 NHTSA owner-reported complaint for the 2018 Porsche 718 Cayman. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Complaints, most recent first

Showing 1–1 of 1

Powertrain (other)Suspension
Filed Oct 16, 2026

The contact owns a 2018 Porsche 718 Cayman. The contact stated that while the spouse was driving the vehicle at 70 MPH, abnormal handling occurred, followed immediately by a loud knocking noise. The driver pulled the vehicle to the side of the road and discovered the rear left axle had fractured, detached, and was hanging on the ground. The contact stated the failure was known within the Porsche community. Following the failure, a "possible rear gear fault driving permitted" message was displayed on the instrument panel. The manufacturer was notified of the failure. The vehicle was towed to the dealer, where diagnosis confirmed a rear left axle failure and a damaged drivetrain, requiring a complete axle replacement and a new gearbox. The failure mileage was 25,000.

NHTSA ID
11771621
Incident
Apr 18, 2025
Mileage
25,000 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Data sources

Data on this page last refreshed .