Owners have filed 13 complaints
about the 2015 Porsche 911 with NHTSA between 2017 and 2024.
The largest single group is the electrical system.
Across this model's run it ranks 2 of 7 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 54
Against the median year of the Porsche 911. 50 means typical for this
model; 100 means roughly double.
Severity — 79
15.4% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
67% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2015 Porsche 911
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Electrical System
430.8%
0 crashes, 1 fires · median 36,500 mi
Engine & Cooling
323.1%
0 crashes, 1 fires · median 26,000 mi
Other & Unspecified
17.7%
Windows, Mirrors & Wipers
17.7%
Median failure at 31,000 miles
Acceleration & Cruise Control
17.7%
Body & Structure
17.7%
Brakes
17.7%
Transmission & Drivetrain
17.7%
Median failure at 10,030 miles
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Jan 2017peak 3Oct 2024
Complaints that involved harm
Reports where the owner recorded a crash, a fire, an injury or a death.
at 42,000 milesBudd Lake, NJFire
ELECTRICAL SYSTEM
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.
NHTSA complaint #11322421 — an unverified report by a vehicle owner.
at 42,000 milesBudd Lake, NJFire
ENGINE
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.
NHTSA complaint #11322421 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Simi Valley, CA
VEHICLE SPEED CONTROL
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.
NHTSA complaint #11622211 — an unverified report by a vehicle owner.
Simi Valley, CA
ELECTRICAL SYSTEM
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.
NHTSA complaint #11622211 — an unverified report by a vehicle owner.
Simi Valley, CA
ENGINE
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.
NHTSA complaint #11622211 — an unverified report by a vehicle owner.
Chula Vista, CA
ELECTRICAL SYSTEM
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.
NHTSA complaint #11581753 — an unverified report by a vehicle owner.
Mercer Island, WA
SERVICE BRAKES
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.
NHTSA complaint #11526023 — an unverified report by a vehicle owner.
Mooresville, NC
UNKNOWN OR OTHER
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.
NHTSA complaint #11456987 — an unverified report by a vehicle owner.
Mooresville, NC
STRUCTURE:BODY
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.
NHTSA complaint #11456987 — an unverified report by a vehicle owner.
at 42,000 milesBudd Lake, NJFire
ELECTRICAL SYSTEM
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.
NHTSA complaint #11322421 — an unverified report by a vehicle owner.
at 42,000 milesBudd Lake, NJFire
ENGINE
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.
NHTSA complaint #11322421 — an unverified report by a vehicle owner.
at 10,030 milesCoral Gables, FL
POWER TRAIN
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!.
NHTSA complaint #11031571 — an unverified report by a vehicle owner.
at 10,000 milesCoral Gables, FL
ENGINE
TL* THE CONTACT OWNS A 2015 PORSCHE 911 CARRERA. SEVERAL TIMES, WHILE DRIVING, THE CHECK OIL LEVEL WARNING INDICATOR ILLUMINATED. WHEN THE CONTACT FILLED THE VEHICLE WITH FUEL, HE ALSO HAD TO ADD OIL TO THE ENGINE. THE CONTACT STATED THAT HE HAD TO ADD OIL APPROXIMATELY EVERY 500-900 MILES. THE VEHICLE WAS TAKEN TO THE COLLECTION (200 BIRD RD, CORAL GABLES, FL 33146 (305) 444-5555) WHERE A FAILURE COULD NOT BE DIAGNOSED. THE CONTACT WAS ADVISED THAT THIS WAS A NORMAL ISSUE FOR THIS VEHICLE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE, BUT NO ASSISTANCE WAS OFFERED. THE FAILURE MILEAGE WAS APPROXIMATELY 10,000. *LN CONSUMER DATED THIS IS A MALFUNCTION AS WELL AS A SAFETY ISSUE THE EXCESSIVE OIL CONSUMPTION EACH 500-700 MILES 400 HAVE TO ADD OIL STOP THE CAR OR THE ENGINE CAN FREEZE UP ON YOU. UPDATED 7/24/18*JB
NHTSA complaint #11031568 — an unverified report by a vehicle owner.
at 31,000 milesNEW York, NY
ELECTRICAL SYSTEM
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.
NHTSA complaint #10946814 — an unverified report by a vehicle owner.
at 31,000 milesNEW York, NY
VISIBILITY
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.
NHTSA complaint #10946814 — an unverified report by a vehicle owner.