Problems · NHTSA complaints
2015 Porsche 911 Carrera 4 GTS problems
Owners filed 8 complaints about the 2015 Porsche 911 Carrera 4 GTS with NHTSA between Jan 2017 and Oct 2024. The most-cited component is electrical system (4).
Complaints
8
Filed with NHTSA
Crashes
0
Reported by owners
Fires
1
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Electrical system4
- Engine3
- Vehicle speed control1
- Service brakes1
- Structure1
- Power train1
- Visibility1
- Other / unknown1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 30, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
3
0
0
1
0
1
1
2
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2017 | 3 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 1 |
| 2021 | 0 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Electrical system
4 reports1 fire
“THE PCM UNIT WHICH CONTROLS THE CARS COMPUTERS KEEPS SHUTTING ON AND OFF SAYING DO NOT DRIVE. GET SERVICE ….. THIS HAS HAPPENED ON MANY CARS AND THERE WAS A CLASS ACTION SUIT REGARDING A RECALL. IT IS NOW CLOSED AND I WAS NEVER NOTIFIED.”
Engine
3 reports1 fire
“IN MAY 2019 I PURCHASED A CERTIFIED PRE-OWNED 2015 PORSCHE CARRERA GTS AND HAD IT FOR 11 MONTHS BEFORE IT CAUGHT ON FIRE WHILE DRIVING IT. A FORENSIC INVESTIGATION REVEALED THAT THE CAUSE OF THE FIRE WAS THE ELECTRICAL BOARD LOCATED ON THE INSIDE OF THE CABIN NEAR THE RIGHT REAR TIRE. ON THE DAY OF THE INCIDENT, AFTER DRIVING THE CAR LESS THAN 15 MILES FROM MY HOME TO A NEARBY PROPERTY I NOTICED THE CAR WAS SMOKING AS I PULLED INTO THE DRIVEWAY. I PARKED THE VEHICLE AND FOUND THAT THERE WAS A SMALL FIRE IN THE ENGINE COMPARTMENT. I COULDN'T GET TO THE CAR IN TIME WITH A FIRE EXTINGUISHER AND BY THE TIME THE FIRE DEPARTMENT ARRIVED, THE CAR WAS ENGULFED IN FLAMES. I'M NOW FACED WITH A TOTAL LOSS FOR THE VEHICLE AND NOT TO MENTION RELUCTANCE TO EVER PURCHASE ANOTHER PORSCHE IN MY LIFE. I'VE DREAMT ABOUT OWNING THIS PORSCHE CARRERA (GTS) SINCE I WAS A CHILD AND THIS EXPERIENCE HAS TOTALLY ALTERED MY PERCEPTION. IF MY FAMILY HAD BEEN IN THE CAR WITH ME, THIS COULD HAVE TURNED OUT DISASTROUS AND FOR THAT MY CONFIDENCE HAS BEEN SHATTERED WITH PORSCHE. I AM ALSO LEFT SEARCHING FOR A CAR THAT IS CLOSE TO AS NICE AS THE CAR I HAD (FULLY SPEC'D AND DECKED OUT CARRERA…”
Vehicle speed control
1 report
Service brakes
1 report
“This car has popular aftermarket Spiegler brake lines on it, braided stainless lines, these are the brakes and lines: https://www.essexparts.com/ap-racing-by-essex-road-brake-kit-front-9562380mm-porsche-911 Yesterday, on startup with the brake pedal depressed, the front right line burst. See uploaded pictures. The lines have been on the car since April 2021, and the car is regularly service and gets annual or more frequent brake flushes. Inspection at the shop this morning revealed multiple areas of discoloration underneath the plastic sheath that is over the braided line. One of the other lines on the front left was bulging in the area of the discoloration, suggesting that one was close to failure as well. There are no signs of abrasion on the lines themselves, it appears the stainless braided line that encases the teflon inner line is corroding or degrading for some reason. I have contact Essex, the distributor of this kit. The car is at Cantrell Motorsports in Bellevue, Washington and has not been disassembled yet, I would authorize the NHTSA to inspect and take custody of the brake lines if you wish.”
Structure
1 report
“Spoiler lift spring brackets on both sides are broken allowing the springs to get in the way of the normal performance of the spoiler. This could impede the deployment of the spoiler or the successful retraction of the spoiler, creating a reduction in downforce (grip) or creating a safety hazard of a non-fully retracted spoiler. This was identified by a third-party repair shop during maintenance work. In doing further research online I have determined that this is an extremely common issue on this model generation (991.1) that Porsche will not address.”
Power train
1 report
“I FIND MYSELF HAVING TO HAVING TO ADD OIL EVERY TWO FILL UPS. FROM 500 HUNDRED TO 1000 MILES.THIS RATE OF OIL CONSUMPTION VERY EXCESSIVE AND IF I WOULD HAVE BEEN ADVISED AT THE TIME OF PURCHASE I WOULD HAVE NOT BOUGHT THE CAR. THE DEALER AND PORSCHE USA SAYS THIS IS NORMAL. BUT I HAVE ANOTHER PORSCHE THAT DOESN'T USE OIL. THEY HAVE TO ADD OIL THREE TIMES SINCE I BOUGHT THE CAR.UNACCEPTABLE!.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.