Total Complaints
12 filings
PORSCHE 911 · model year
1999 PORSCHE 911
12 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1999PORSCHE911 carries 12 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1999 911 is seat belts with 2 filings, followed by engine (2) and engine and engine cooling:cooling system (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 5 investigation files overlapping the 1999 911. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
12
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| SEAT BELTS | 2 |
| ENGINE | 2 |
| ENGINE AND ENGINE COOLING:COOLING SYSTEM | 1 |
| SEAT BELTS:REAR/OTHER | 1 |
| ELECTRICAL SYSTEM:WIRING | 1 |
| ELECTRICAL SYSTEM | 1 |
| SERVICE BRAKES | 1 |
| STEERING | 1 |
| ENGINE AND ENGINE COOLING | 1 |
| AIR BAGS | 1 |
Recent Complaints
20190213ENGINE
ENGINE HAS SEIZED DUE TO INTERMEDIATE SHAFT BEARING FAILUE (IMS BEARING FAILURE), THE ENGINE IS A 3.4 LITER FLAT 6 CYLINDER ENGINE WITH ONLY 95,500 MILES ON IT. THERE WAS NO WARNING SIGN OF AN ISSUE. TURNED OFF CAR WHEN I GOT HOME THEN WHEN I TURNED IT ON THE NAEXT DAY IT WOULD NOT TURN OVER TO CRANK. I TOOK IT TO A LOCAL MECHANIC SHOP TO GET IT TESTED AND WAS TOLD I WILL HAVE TO REPLACE ENTIRE ENGINE WHICH COSTS UPWARDS OF $13,000 BECAUSE OF AN IMS BEARING FAILURE.
20170728AIR BAGS
TL* THE CONTACT OWNS A 1999 PORSCHE 911. UPON STARTING THE VEHICLE, THE SRS INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO PORSCHE OF ARLINGTON (3100 JEFFERSON DAVIS HWY, ARLINGTON, VA 22202). THE CONTACT DID NOT KNOW THE DIAGNOSIS RESULTS; HOWEVER, THE SEAT BELTS WERE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE SEAT BELTS FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED ONCE AGAIN. THE VEHICLE WAS TAKEN TO PORSCHE OF ARLINGTON WHERE IT WAS DIAGNOSED THAT THERE WAS A SENSOR FAILURE. THE AIR BAG MODULE FAILED AND NEEDED TO BE REPLACED ALONG WITH THE SEAT BELTS IN ORDER TO FULLY REPAIR THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THE FAILURE WAS DUE TO MAINTENANCE ISSUES AND THEY COULD NOT ASSIST. THE APPROXIMATE FAILURE MILEAGE WAS 15,000.
Mileage: 15,000
20170728SEAT BELTS
TL* THE CONTACT OWNS A 1999 PORSCHE 911. UPON STARTING THE VEHICLE, THE SRS INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO PORSCHE OF ARLINGTON (3100 JEFFERSON DAVIS HWY, ARLINGTON, VA 22202). THE CONTACT DID NOT KNOW THE DIAGNOSIS RESULTS; HOWEVER, THE SEAT BELTS WERE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE SEAT BELTS FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED ONCE AGAIN. THE VEHICLE WAS TAKEN TO PORSCHE OF ARLINGTON WHERE IT WAS DIAGNOSED THAT THERE WAS A SENSOR FAILURE. THE AIR BAG MODULE FAILED AND NEEDED TO BE REPLACED ALONG WITH THE SEAT BELTS IN ORDER TO FULLY REPAIR THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THE FAILURE WAS DUE TO MAINTENANCE ISSUES AND THEY COULD NOT ASSIST. THE APPROXIMATE FAILURE MILEAGE WAS 15,000.
Mileage: 15,000
20130701ENGINE AND ENGINE COOLING
WAS DRIVING AND MASSIVE AMOUNTS OF ANTIFREEZE LEAKED OUT OF THE BACK ONTO THE ROAD AND ON MY TIRES. ENGINE THEN STARTED TO SMOKE AND OVERHEAT. COULD HAVE BEEN VERY DANGEROUS. OVERFLOW RESERVOIR CAP WAS SCREWED ON TIGHTLY SO THAT WAS NOT THE ISSUE. I READ THAT THERE WERE SOME ISSUES WITH THE 2001-07 PORSCHE 911. MY ENGINE WAS REPLACED IN 2003 SO PERHAPS IT WAS RETROFITTED WITH THE PROBLEM PARTS. IT WILL BE AT THE RAY CATENA PORSCHE DEALERSHIP IN EDISON NJ TOMORROW FOR REPAIRS. *TR
Mileage: 120,000
20130404SERVICE BRAKES
I WAS DRIVING ON A 16 LANE MAJOR HIGHWAY IN TORONTO IN THE EXPRESS LANES AT 70 MPH. WITHOUT WARNING THE ENGINE LOST ALL POWER AND STALLED. THE CHECK ENGINE LIGHT WAS FLASHING. IT WAS DIFFICULT TO STOP SAFELY SINCE THE POWER STEERING AND POWER BRAKES WERE NOT FUNCTIONING WITH THE ENGINE STOPPED. IT WOULD NOT RESTART AND I WAS LUCKY TO CHANGE LANES IN HEAVY TRAFFIC AND PULL ONTO THE HARD SHOULDER OF THE ROAD. I WAS STUCK SITTING IN THE EXPRESS LANES BY A GUARD RAIL UNTIL A TOW TRUCK CAME, WHICH TOOK AN HOUR. AFTER TAKING IT TO THE PORSCHE DEALER IT WAS DIAGNOSED AS A IMS BEARING FAILURE THAT REQUIRED A NEW ENGINE. I WAS ALSO TOLD THIS BEARING IS A COMMON PROBLEM WITH THE 1997 TO 2008 WATER COOLED 911 AND BOXSTER PORSCHES WITH A 10 PERCENT FAILURE RATE TO DATE, AND THAT THEY WILL ALL FAIL EVENTUALLY. THE DEALER ALSO SAID THERE IS A 3RD PARTY RETROFIT KIT THAT THE PORSCHE DEALERS ARE AWARE OF BUT DON'T USE BECAUSE IT WOULD ACKNOWLEDGE THERE IS A PROBLEM WITH THE CAR, SO PORSCHE TURNED A
Mileage: 44,000
20130404ENGINE
I WAS DRIVING ON A 16 LANE MAJOR HIGHWAY IN TORONTO IN THE EXPRESS LANES AT 70 MPH. WITHOUT WARNING THE ENGINE LOST ALL POWER AND STALLED. THE CHECK ENGINE LIGHT WAS FLASHING. IT WAS DIFFICULT TO STOP SAFELY SINCE THE POWER STEERING AND POWER BRAKES WERE NOT FUNCTIONING WITH THE ENGINE STOPPED. IT WOULD NOT RESTART AND I WAS LUCKY TO CHANGE LANES IN HEAVY TRAFFIC AND PULL ONTO THE HARD SHOULDER OF THE ROAD. I WAS STUCK SITTING IN THE EXPRESS LANES BY A GUARD RAIL UNTIL A TOW TRUCK CAME, WHICH TOOK AN HOUR. AFTER TAKING IT TO THE PORSCHE DEALER IT WAS DIAGNOSED AS A IMS BEARING FAILURE THAT REQUIRED A NEW ENGINE. I WAS ALSO TOLD THIS BEARING IS A COMMON PROBLEM WITH THE 1997 TO 2008 WATER COOLED 911 AND BOXSTER PORSCHES WITH A 10 PERCENT FAILURE RATE TO DATE, AND THAT THEY WILL ALL FAIL EVENTUALLY. THE DEALER ALSO SAID THERE IS A 3RD PARTY RETROFIT KIT THAT THE PORSCHE DEALERS ARE AWARE OF BUT DON'T USE BECAUSE IT WOULD ACKNOWLEDGE THERE IS A PROBLEM WITH THE CAR, SO PORSCHE TURNED A
Mileage: 44,000
20130404STEERING
I WAS DRIVING ON A 16 LANE MAJOR HIGHWAY IN TORONTO IN THE EXPRESS LANES AT 70 MPH. WITHOUT WARNING THE ENGINE LOST ALL POWER AND STALLED. THE CHECK ENGINE LIGHT WAS FLASHING. IT WAS DIFFICULT TO STOP SAFELY SINCE THE POWER STEERING AND POWER BRAKES WERE NOT FUNCTIONING WITH THE ENGINE STOPPED. IT WOULD NOT RESTART AND I WAS LUCKY TO CHANGE LANES IN HEAVY TRAFFIC AND PULL ONTO THE HARD SHOULDER OF THE ROAD. I WAS STUCK SITTING IN THE EXPRESS LANES BY A GUARD RAIL UNTIL A TOW TRUCK CAME, WHICH TOOK AN HOUR. AFTER TAKING IT TO THE PORSCHE DEALER IT WAS DIAGNOSED AS A IMS BEARING FAILURE THAT REQUIRED A NEW ENGINE. I WAS ALSO TOLD THIS BEARING IS A COMMON PROBLEM WITH THE 1997 TO 2008 WATER COOLED 911 AND BOXSTER PORSCHES WITH A 10 PERCENT FAILURE RATE TO DATE, AND THAT THEY WILL ALL FAIL EVENTUALLY. THE DEALER ALSO SAID THERE IS A 3RD PARTY RETROFIT KIT THAT THE PORSCHE DEALERS ARE AWARE OF BUT DON'T USE BECAUSE IT WOULD ACKNOWLEDGE THERE IS A PROBLEM WITH THE CAR, SO PORSCHE TURNED A
Mileage: 44,000
20050516ELECTRICAL SYSTEM
CONSUMER STATES: VEHICLE DOORS UNLOCK AND WINDOWS ROLL DOWN AUTOMATICALLY WITHOUT BEING TOUCHED. THE VEHICLE DOES THIS WHETHER KEYS ARE IN THE IGNITION OR NOT. DEALER INSTALLED NEW DRIVERS DOOR KEY SWITCH ASSEMBLY AT THE CONSUMERS EXPENSE. *TT
Mileage: 47,863
20041027ELECTRICAL SYSTEM:WIRING
NEED KIT TO SOLVE AIRBAG PROBLEM. *BF THE AIR BAG WARNING LIGHT HAD COME ON AND DID SO EACH TIME THE VEHICLE WAS IN MOTION. THE CONSUMER WAS INFORMED THAT THE SEAT BELTS HAD COME IN CONTACT WITH THE WIRING AND A KIT WAS NEEDED TO SOLVE THE PROBLEM. (VEHICLE MODEL/ PORSCHE 996 C2) *SC
20041027SEAT BELTS
NEED KIT TO SOLVE AIRBAG PROBLEM. *BF THE AIR BAG WARNING LIGHT HAD COME ON AND DID SO EACH TIME THE VEHICLE WAS IN MOTION. THE CONSUMER WAS INFORMED THAT THE SEAT BELTS HAD COME IN CONTACT WITH THE WIRING AND A KIT WAS NEEDED TO SOLVE THE PROBLEM. (VEHICLE MODEL/ PORSCHE 996 C2) *SC
20030501SEAT BELTS:REAR/OTHER
REAR SEAT BELTS CAUSES OCCUPANTS TO BE TRAPPED. THEY CAN NOT ESCAPE OR BE RESCUED IN CASE OF EMERGENCY. MAJOR SAFETY ISSUE.*TS ***DIMSII IVOQ ENTRY POSTED AFTER 12-12-02 CUT OVER TO ARTEMIS***761712
Mileage: 51,150
20000322ENGINE AND ENGINE COOLING:COOLING SYSTEM
ENGINE HEAT SENSOR FAILED CAUSING COOLANT TO LEAK FROM VEHICLE. YH
Compare 1999PORSCHE911 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1999 PORSCHE 911 have?▼
The 1999 PORSCHE 911 has 12 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1999 PORSCHE 911?▼
The most-complained component for the 1999 PORSCHE 911 is SEAT BELTS with 2 complaints. Other frequently reported areas include ENGINE and ENGINE AND ENGINE COOLING:COOLING SYSTEM.
Is the 1999 PORSCHE 911 safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.