2015 Porsche 911 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2015 Porsche 911, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical433.3%
- Engine325.0%
- Brakes18.3%
- Driver assistance18.3%
- Body & structure18.3%
- Powertrain (other)18.3%
- Visibility18.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
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.
There is an active spoiler that has a brake light built into it. There is a design issue with the wiring for the light in the spoiler. The brake light harness is worn out by the movement of the spoiler causing failure of the brake light. This meams there is no 3rd brake light when the spoiler is automatically activated.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
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.
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 GTS) WHICH I'VE HAD NO LUCK DOING WITHIN THE PRICE POINT I CAN AFFORD GIVEN THE INSURANCE PAY OUT.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
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!.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
CAR HEATING SYSTEM CUT OUT. I WAS DRIVING ON A HIGHWAY AT BELOW FREEZING TEMPERATURES AND THE HEATER SYSTEM DIED. NOT HAVING HEAT, THE WINDSHIELD FOGGED UP IMMEDIATELY AND COLD RAIN STARTED FREEZING ON THE WINDSHIELD REQUIRING ME CONTINUOUSLY CLEAR IT WITH WASHER FLUID UNTIL THE CAR RAN OUT OF WASHER FLUID AND I HAD TO STOP. AFTER DOING SOME INTERNET RESEARCH IT SEEMS LIKE THIS IS A PROBLEM AFFECTING MANY PORSCHES OF THIS TYPE. IT SEEMS LIKE PORSCHE IS USING A FAILURE PRONE VALVE UNIT IN 6-8 PLACES IN THE CAR (DEPENDING ON MODEL TYPE). THE PROBLEM SEEMS TO BE WELL KNOWN AND MY DEALER KNEW ALREADY THAT ITS A VALVE PROBLEM WHEN I MENTIONED IT AND CONCEDED THAT IT IS AN ISSUE. NEVERTHELESS, IT LOOKS LIKE PORSCHE DECIDED NOT TO RECALL THE VALVES, BUT SIMPLY REPLACE THEM WHEN THEY FAIL. THIS MIGHT BE OK FOR DRIVERS IN WARM WEATHER, BUT IN COLD WEATHER THIS CAN MEAN AN IMMEDIATE STOP OR RISKING AN ACCIDENT DUE TO LOW VISIBILITY. IN ADDITION, THE SAME VALVE IS APPARENTLY USED IN OTHER SYSTEMS OF THE CAR AND CAN CAUSE FAILURES THERE AS WELL. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
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.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .