← New search

2014 Fiat 500

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →

How this year compares

Owner complaints by model year

Other model years Selected year
Compare all 500 years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

104 reports with mileage · 20 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Power Train. Review the 67 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 19 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

9 crash reports7 fire reports6 injury reports

Engine complaints

19 reports
Clear category filter
Mileage unknown · Feb 6, 2024
Engine

On 1/24/2024 the check engine came on. I went to auto zone the same day and they check the alert. They advised the code possibly could be the spark plugs or ignition coil. The engine light went off on 2/6/2024 and I went to the dealership for them to check the code information. The code that appear PCM P0301-00 Active Cylinde…

Read full complaint

On 1/24/2024 the check engine came on. I went to auto zone the same day and they check the alert. They advised the code possibly could be the spark plugs or ignition coil. The engine light went off on 2/6/2024 and I went to the dealership for them to check the code information. The code that appear PCM P0301-00 Active Cylinder 1 Misfire-

NHTSA ODI #11570365

98,000 miles · Jan 21, 2019
Engine

MY FIAT HAS BEEN HAVING A ISSUE WITH STALLING ON THE ROAD.. I HAVE TAKEN IT TO TWO MECHANICS FOR DIAGNOSTICS BUT NOT ONE CAN FIND THE PROBLEM. IT'S A SAFETY CONCERN

NHTSA ODI #11171114

34,000 miles · Jan 23, 2017
Electrical SystemEnginePower Train

UNDER COLD CONDITIONS (25 DEGREES F) AND FIRST STARTUP OF THE DAY, WHEN DRIVING VEHICLE IN CITY DRIVING THE VEHICLE'S THROTTLE RESPONSE WILL STOP WORKING INTERMITTENTLY. THE ISSUE TYPICALLY OCCURS AFTER STARTING THE VEHICLE IN THE MORNING IN SUB-FREEZING TEMPERATURES AND THEN DRIVING IN 1ST AND 2ND GEAR TO EXIT RESIDENCE AND…

Read full complaint

UNDER COLD CONDITIONS (25 DEGREES F) AND FIRST STARTUP OF THE DAY, WHEN DRIVING VEHICLE IN CITY DRIVING THE VEHICLE'S THROTTLE RESPONSE WILL STOP WORKING INTERMITTENTLY. THE ISSUE TYPICALLY OCCURS AFTER STARTING THE VEHICLE IN THE MORNING IN SUB-FREEZING TEMPERATURES AND THEN DRIVING IN 1ST AND 2ND GEAR TO EXIT RESIDENCE AND ENTER TRAFFIC. UPON STOPPING AT A STOP LIGHT OR SIGN, AND THEN PROCEEDING TO ACCELERATE, THE VEHICLE'S THROTTLE WILL MALFUNCTION AND THE GAS PEDAL WILL NOT RESPOND WHEN PRESSED. THE RPMS WILL DROP TO ABOUT 1300RPMS AND ENTER WHAT FEELS LIKE LIMP MODE MOMENTARILY UNTIL THE GAS PEDAL IS PUMPED A FEW TIMES AND THEN IT WILL RESUME ACCELERATING AS NORMAL. NO ERROR CODES ARE THROWN AND THE LOCAL FIAT STUDIO CANNOT GET THE ERROR TO DUPLICATE. THIS IS A SAFETY ISSUE AS IT TYPICALLY HAPPENS WHILE ENTERING INTO TRAFFIC AND THE VEHICLE BECOMES UNRESPONSIVE. 2014 FIAT 500L TREKKING WITH MANUAL TRANSMISSION. THIS HAS HAPPENED EACH WINTER I HAVE DRIVEN THE VEHICLE. VIDEO EVIDENCE HAS BEEN SUBMITTED TO FIAT WITH NO RESOLUTION. *TR

NHTSA ODI #10947026

20,000 miles · Nov 23, 2015
Electrical SystemElectronic Stability Control (esc)Engine

I BOUGHT CAR ON MAY 2014. AFTER I USED CAR FOR 2-3 MONTHS I HAVE A PROBLEM ABOUT I COULDN'T START BECAUSE OF NO BATTERY POWER. I TOOK TO THE SHOP AND THEY SAID CHANGE THE BATTERY BRAND NEW. HOWEVER, AFTER I USE CAR FOR 6-7 MONTHS IT HAPPENED AGAIN THAT I COULDN'T START THE CAR D/T NO BATTERY, THE TECHNICIAN SAID TO ME THAT THE …

Read full complaint

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

NHTSA ODI #10806381

3,506 miles · Sep 10, 2015
EnginePower TrainUnknown Or Other

I WAS PULLING INTO TRAFFIC ON AN EXTREMELY BUSY ROAD. THERE IS ALWAYS HEAVY TRAFFIC ON THIS ROAD SO YOU MUST PULL OUT INTO TRAFFIC QUICKLY. WHEN DOING SO I PRESSED THE GAS PEDAL ALMOST TO THE FLOOR. THE CAR DID NOT SHIFT INTO ANY GEAR. IT WAS LIKE IT WENT INTO NEUTRAL. THE RPM'S REVED AND IT WOULD NOT MOVE. I WAS ALMOST HIT ON B…

Read full complaint

I WAS PULLING INTO TRAFFIC ON AN EXTREMELY BUSY ROAD. THERE IS ALWAYS HEAVY TRAFFIC ON THIS ROAD SO YOU MUST PULL OUT INTO TRAFFIC QUICKLY. WHEN DOING SO I PRESSED THE GAS PEDAL ALMOST TO THE FLOOR. THE CAR DID NOT SHIFT INTO ANY GEAR. IT WAS LIKE IT WENT INTO NEUTRAL. THE RPM'S REVED AND IT WOULD NOT MOVE. I WAS ALMOST HIT ON BOTH SIDES OF THE VEHICAL. THIS HAPPENED ON SATURDAY SEPT. 5TH. ON TUES. SEPT 8TH I WAS ON AN ON RAMP TO THE INTERSTATE. I ONCE AGAIN PRESSED FIRMLY ONTHE GAS PEDEL TO BE ABLE TO MEGER INTO TRAFFIC AND QUICKLY GET UP TO SPEED. WHILE DOING SO, THE CAR ACTED THE SAME WAY. IT WAS LIKE IT WAS IN NEUTRAL. I WAS ONCE AGAIN ALMOST HIT BY SEVERAL CARS. I CALLED FIAT IN PORTLAND AND DEMANDED THEY LOOK AT THE CAR. AT FIRST THEY COULD'NT GET ME IN AS THEY WERE OVER BOOKED. I EXPLAINED THAT I HAVE SURGERY IN MASS. ON FRIDAY THE 11TH AND I CANNOT DRIVE THIS CAR ON A FOUR LANE HIGHWAY. I FEEL EXTREMELY UNSAFE IN THIS VEHICLE. I HAVE MANY OTHER MECHANICAL PROBLEMS THAT THEY ARE LOOKING INTO AS WELL. THIS IS THE WORST CAR THAT I HAVE EVER PURCHACED. I HAVE ALSO CONTACTED FIAT USA.

NHTSA ODI #10762805

39,000 miles · Aug 28, 2015
EngineFire

TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE STOPPED AT A TRAFFIC LIGHT, THE VEHICLE JERKED VIOLENTLY. A MESSAGE APPEARED ON THE DASHBOARD INSTRUCTING THE CONTACT TO PLACE THE TRANSMISSION SHIFTER IN THE NEUTRAL POSITION AND THEN INTO THE DRIVE POSITION. THE CONTACT FOLLOWED THE INSTRUCTIONS AND THE ENGINE FAILED WITHOUT WARNING.…

Read full complaint

TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE STOPPED AT A TRAFFIC LIGHT, THE VEHICLE JERKED VIOLENTLY. A MESSAGE APPEARED ON THE DASHBOARD INSTRUCTING THE CONTACT TO PLACE THE TRANSMISSION SHIFTER IN THE NEUTRAL POSITION AND THEN INTO THE DRIVE POSITION. THE CONTACT FOLLOWED THE INSTRUCTIONS AND THE ENGINE FAILED WITHOUT WARNING. THE CONTACT ATTEMPTED TO RESTART THE ENGINE MULTIPLE TIMES BEFORE SUCCEEDING. THE CHECK ENGINE WARNING LIGHT THEN ILLUMINATED. THE CONTACT STATED THAT THE VEHICLE WAS RELUCTANT TO ACCELERATE AND DRIVE SLOWLY. THE CONTACT ALSO NOTICED A BURNING ODOR. THE CONTACT DISCOVERED THAT THE ODOR WAS COMING FROM UNDER THE HOOD. THE VEHICLE WAS TOWED TO A DEALER BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 39,000. THE CONSUMER STATED THE VEHICLE WAS TAKEN TO THE DEALER ON MULTIPLE OCCASIONS FOR THE JOLTING. THE DEALER ADVISED THE COMPUTER WAS LEARNING THE DRIVER'S HABITS AND WAS OPERATING AS DESIGNED. AFTER THE FAILURE, THE VEHICLE WAS TOWED TO THE DEALER AND WAS REPAIRED UNDER WARRANTY. THE MANUFACTURER OFFERED A 60,000 MILE WARRANTY, NO DEDUCTIBLE, FREE OF COST AND $500.00 FOR COMPENSATION. THE CONSUMER WAS DISSATISFIED WITH THE OFFER. UPON RETRIEVING THE VEHICLE THE DEALER ADVISED THE CONSUMER TO PUT THE VEHICLE IN NEUTRAL WHILE AT A STOP, BECAUSE ONE OF THE CLUTCHES SLIGHTLY DRAGS AND WOULD EVENTUALLY BURN UP, WHICH IS WHAT CAUSED THE FAILURE. THE CONSUMER BELIEVED THAT WAS UNACCEPTABLE.*JS

NHTSA ODI #10759913

1,045 miles · Aug 24, 2015
EnginePower Train

TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE DRIVING AT APPROXIMATELY 30 MPH, THE TRANSMISSION TEMPERATURE GAUGE WARNING LIGHT ILLUMINATED AND A VOICE ACTIVATED INDICATING THAT THE CLUTCH WAS OVERHEATING AND WARNED THE CONTACT TO PARK THE VEHICLE IMMEDIATELY. IN ADDITION, THE CONTACT STATED THAT WHEN THE VEHICLE WAS PARKED IN VAR…

Read full complaint

TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE DRIVING AT APPROXIMATELY 30 MPH, THE TRANSMISSION TEMPERATURE GAUGE WARNING LIGHT ILLUMINATED AND A VOICE ACTIVATED INDICATING THAT THE CLUTCH WAS OVERHEATING AND WARNED THE CONTACT TO PARK THE VEHICLE IMMEDIATELY. IN ADDITION, THE CONTACT STATED THAT WHEN THE VEHICLE WAS PARKED IN VARIOUS WEATHER CONDITIONS, THE SHIFT LEVER FAILED TO SHIFT OUT OF THE PARK POSITION. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS TOWED TO A DEALER, WHERE IT WAS INSPECTED BUT THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 1,045.

NHTSA ODI #10759002

Mileage unknown · Jul 26, 2015
EngineFuel/propulsion SystemPower Train

I HAD MY RADIO REPLACED AT THE DEALERSHIP BECAUSE THE SCREEN WAS HAVING SOME DISTORTION ISSUES AND ALSO IT WAS CREATING A LOT OF HEAT,SO IT WAS REPLACED AND NOW IT'S STARTING TO SHORT OUT AND THEY CANT SEEM TO FIGURE OUT WHY ITS DOING IT! THE VOLUME GOES UP AND DOWN ONCE IN AWHILE BY ITSELF AND THEY CAN'T SEEM TO FIGURE THAT OUT…

Read full complaint

I HAD MY RADIO REPLACED AT THE DEALERSHIP BECAUSE THE SCREEN WAS HAVING SOME DISTORTION ISSUES AND ALSO IT WAS CREATING A LOT OF HEAT,SO IT WAS REPLACED AND NOW IT'S STARTING TO SHORT OUT AND THEY CANT SEEM TO FIGURE OUT WHY ITS DOING IT! THE VOLUME GOES UP AND DOWN ONCE IN AWHILE BY ITSELF AND THEY CAN'T SEEM TO FIGURE THAT OUT EITHER! ALSO MY WIFE HAS BEEN EXPERIENCING A LACK OF POWER WHEN SHE'S DRIVING AND THE VEHICLE WILL NOT GO PAST 50MPH,AND THEN IT STARTS TO SHAKE PRETTY BAD! SHE HAS TO PULL OVER AND SHUT THE CAR OFF WAIT 2 MINUTES AND THAN TURN IT BACK ON AND THAN IT'S FINE! AND LASTLY WHEN I SIT AT A TRAFFIC LIGHT I START TO SMELL SOMETHING BURNING COMING FROM THE ENGINE AND I PULL OVER TO INSPECT THE ENGINE AND NOTHING.. I CALLED THE DEALERSHIP AND THE LADY TOLD ME IT'S THE TRANSMISSION BURNING BECAUSE I HAVE THE AUTO MANUAL SHIFTER MODEL AND THAT'S WHY IT DOES IT AND IT IS NORMAL! I REALLY DON'T THINK IT'S NORMAL AT ALL? THE LADY AT THE SERVICE COUNTER TOLD ME THAT THIS MODEL REALLY TOOK OFF IN ITALY BUT NOT HERE IN THE STATES! SO I GUESS I BOUGHT A LEMON I TOLD HER AND ALL SHE SAID WAS SHE WAS SORRY!! I HAVE SO MUCH TROUBLE AT THIS DEALERSHIP BECAUSE I HAVE TO PROVE SOMETHING IS ALWAYS WRONG WITH MY CAR!!!

NHTSA ODI #10743540

9,326 miles · May 20, 2015
EnginePower Train

ON THE DAY OF FEB. 24 2015 ME AND MY WIFE WERE IN THE DRIVE-THRU AT STAR-BUCK. WHILE WE WERE IN LINE TO GET COFFEE WE SMELL THIS BAD BURNING SMELL. I THOUGHT IT WAS FROM SOME WHERE IN THE AREA, I EVEN ASK THE STAR-BUCK CLERK WHATS THAT SMELL, HIS REPLY WAS THIS IS THE FIRST TIME SMELLING IT. AS WE PULLED OFF FROM STAR-BUCKS I NO…

Read full complaint

ON THE DAY OF FEB. 24 2015 ME AND MY WIFE WERE IN THE DRIVE-THRU AT STAR-BUCK. WHILE WE WERE IN LINE TO GET COFFEE WE SMELL THIS BAD BURNING SMELL. I THOUGHT IT WAS FROM SOME WHERE IN THE AREA, I EVEN ASK THE STAR-BUCK CLERK WHATS THAT SMELL, HIS REPLY WAS THIS IS THE FIRST TIME SMELLING IT. AS WE PULLED OFF FROM STAR-BUCKS I NOTICED WHITE SMOKE COMING FROM UNDER THE HOOD AND MAKING ITS WAY INTO THE CABIN OF THE VEHICLE. CALLED THE FIAT DEALERSHIP AS IT WAS HAPPENING, THEY SUGGEST ME TO BRING FIAT IN, SO I DID. FIAT VERIFIED THE PROBLEM AND STATED THIS.( VERIFIED CLUTCH BURNING TYPE SMELL UNDER HOOD. INSPECT AND FOUND NO LEAK AND NO CODES IN PCM OR TCM. DROVE AND FOUND ENGAGEMENT FROM STOP VERY SLIGHTLY DELAYED COMPARED TO NEWER VEHICLE. RELEARNED CLUTCH CONTACT POINTS. DROVE AGAIN AND FEELS BETTER. OK AT THIS TIME.) THEN ON MAY 6 2015 14005 MILES,MY FIAT 500L DID IT AGAIN. WE WERE AT POPEYES DRIVE-THRU WAITING IN LINE TO BUY CHICKEN AND IT HAPPEN AGAIN WITH THE BURNING SMELL AND WHITE SMOKE,BUT THIS TIME MY FIAT WOULDN'T MOVE WHILE WE WERE IN DRIVE. SO I SHIFTED OUT OF DRIVE TO REVERSE FROM REVERSE TO NEUTRAL AND CAR WOULDN'T MOVE. THEN I PUT IT IN PARK AND KILL THE CAR, REATRTED CAR AND IT DECIDED TO MOVE THEN. SO IT SCARED ME AGAIN WITH THE BREATHING OF THE BURNING SMELL, IN WHICH HURTS YOUR LUNGS AND BURNS YOUR EYES. SO I BROUGHT THE FIAT TO A DIFFERENT FIAT DEALERSHIP, WITH MY CONCERN. THEY KEPT THE CAR FOR 1 DAY AND SAID. (TEST DRIVE VEHICLE AND IS OPERATING AS DESIGNED. SHIFTS THROUGH GEARS PRO PERTLY, UP SHIFTS AND DOWN SHIFTS. UNABLE TO DUPLICATE CONCERN AT THIS TIME. CHECKED OVER VEHICLE ANS IS OPERATING AS DESIGNED.

NHTSA ODI #10717561

6,000 miles · May 13, 2015
EngineCrash

TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE DRIVING APPROXIMATELY 42 MPH, THE VEHICLE STALLED WITHOUT WARNING AND THE CONTACT LOST CONTROL OF THE VEHICLE. AS A RESULT, THE CONTACT CRASHED CAUSING DAMAGE TO THE REAR DRIVER SIDE OF THE VEHICLE AND THE REAR WINDOW. A POLICE REPORT WAS NOT FILED AND NO INJURIES WERE REPORTED. THE VE…

Read full complaint

TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE DRIVING APPROXIMATELY 42 MPH, THE VEHICLE STALLED WITHOUT WARNING AND THE CONTACT LOST CONTROL OF THE VEHICLE. AS A RESULT, THE CONTACT CRASHED CAUSING DAMAGE TO THE REAR DRIVER SIDE OF THE VEHICLE AND THE REAR WINDOW. A POLICE REPORT WAS NOT FILED AND NO INJURIES WERE REPORTED. THE VEHICLE WAS TOWED TO THE DEALER, BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 6,000. THE VIN WAS NOT AVAILABLE.

NHTSA ODI #10716216

Official recalls

3

24V474000 · Tires:pressure Monitoring And Regulating Systems

Jun 25, 2024

Chrysler (FCA US, LLC) is recalling certain 2014-2019 Fiat 500 vehicles. The tire pressure monitoring system (TPMS) warning light may not illuminate as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 138, "Tire Pressure Monitoring Systems."

Consequence & remedy

Consequence: A TPMS warning light that fails to illuminate can result in the vehicle being driven with improperly inflated tires, increasing the risk of a crash.

Remedy: Dealers will reprogram the TPMS electronic control unit module, free of charge. Owners were mailed July 11, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 80B.

16V302000 · Power Train:manual Transmission

May 16, 2016

Chrysler (FCA US LLC) is recalling certain model year 2012-2016 Fiat 500 vehicles manufactured June 21, 2010, through January 12, 2016, equipped with a manual transmission. The clutch diaphragm spring may fracture and fail, causing an inability to switch gears.

Consequence & remedy

Consequence: If the clutch diaphragm spring fails, the driver may not be able to shift gears or the vehicle may lose motive power, increasing the risk of a crash.

Remedy: The remedy for this recall will include the installation of a clutch pedal limiter and a clutch pedal switch. The recall began on November 10, 2016. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is S34.

15V291000 · Power Train:automatic Transmission

May 18, 2015

Chrysler (FCA US LLC) is recalling certain model year 2013-2015 Fiat 500 battery electric vehicles manufactured March 8, 2013, to March 7, 2015. The Electric Vehicle Control Unit (EVCU) of the affected vehicles may set a diagnostic trouble code (DTC) that may cause the transmission to unexpectedly shift to neutral.

Consequence & remedy

Consequence: If the vehicle unexpectedly shifts to neutral, the loss of drive could increase the risk of a crash.

Remedy: Chrysler will notify owners, and dealers will reprogram the EVCU, free of charge. The recall began June 19, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is R20.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

EA19001 · Electrical Overstress

Opened Apr 19, 2019 · Closed Sep 19, 2024

Status: closed (inferred from source dates) · Air Bags: Air Bag/restraint Control Module

The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect.  During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW.  The ECU receives signals from crash sensors mounted in the vehicle and deploys the vehicle air bags and seat belt pretensioners in accordance with manufacturer design specifications.  The ECU in the subject vehicles contains a model DS84 application-specific integrated circuit (ASIC) which controls the communication of the crash sensor signal, firing commands (i.e., when to deploy the airbag(s) and/or pretensioners), and fault information (e.g., diagnostic trouble codes). In September 2016, FCA announced recall 16V-668 for certain model year (MY) 2010 to 2014 Chrysler, Dodge and Jeep products manufactured with the subject ZF-TRW ACU.  In this recall, FCA discussed an EOS condition that resulted in a failure of the subject DS84 ASIC, which caused air bag non-deployment.  FCA noted that the defect condition had only been observed in vehicles equipped with sensor harnessing routed across the front of the vehicle.  Other FCA vehicles that also used the subject ACU, but were not equipped with cross-car harnessing, had not experienced EOS failures, despite similar time in service. During the course of this investigation, ODI sent two separate Information Request (IR) letters to six vehicle manufactures (including FCA, Hyundai, Honda, Kia, Mitsubishi, and Toyota) and one IR letter to ZF-TRW.  These IR letters resulted in ODI receiving comprehensive data from these manufacturers and suppliers. Studies of this data found that the DS84 ASIC does not have sufficient protection against negative electrical transients or electrical overstress (“EOS”) that can be generated in certain severe crashes.  An electrical transient occurs when the electrical power supplied to a circuit changes momentarily over a short duration of time.   In these severe crash cases, the crash sensors and other powered wiring can be damaged and short circuited so as to create a negative electrical transient of sufficient intensity and duration (that are outside the vehicle manufacturer's specification) to damage the ASIC before the restraint device deployment signal is received by the SRS ECU.  This damaged signal can lead to incomplete or nondeployment of the air bags and/or pretensioners.  Airbag non-deployment and/or lack of pretensioner operation can increase the risk or severity of injury in a crash.A total of 8 fatalities and 14 injuries were associated with known EOS events. The common element in all investigated manufacturers vehicles is the SRS ECU containing a DS84 ASIC manufactured by ZF-TRW.  The risk associated with the ASIC is equally shared among all OEMS involved in the investigation.  The actual real-world risk can be mitigated by other factors which were assessed by ODI during this investigation. The first mitigating factor involves protections built into the ACU design which protect the DS84 ASIC from damage.  There are multiple strategies and levels of protection employed by different OEMs that provide effective EOS mitigation.  The two most common strategies at the ACU level are circuit protection diodes on the remote senor signal lines, and current limiting resistors that protect critical components. The second mitigating factor is found at the vehicle level and involves the location and routing of the wires leading from the crash sensors to the SRS ECU.  If the wires are well protected in a crash and are not routed with other power wires carrying large currents, the risk for an EOS event is significantly reduced or eliminated. These design specific factors combine to produce a spectrum of risk for the vehicles equipped with ACUs using the DS84 ASIC.  Given the many of years of field exposure, it is possible to divide the subject population into two groups; vehicles which have experienced EOS events, and vehicles which have not experienced EOS field events. Four of the six OEMs involved in this investigation have experienced EOS field events on at least one of their models equipped with a DS84 ASIC.  All vehicle models (including the Toyota models identified in the Failure Report Summary of the opening resume for this investigation) with field events have been recalled.  In an abundance of caution, ODI kept this investigation open five years to monitor field performance and did not identify any field events on vehicles not included in existing safety recalls. Given the spectrum of risk identified in this investigation and that all vehicles with a demonstrated unreasonable risk have been recalled, ODI is closing this investigation. ODI is closing this investigation with the following manufacturer safety recalls: 16V-668, 18E-043, 18V-137, 18V-363, and 20V-024.  With the recall actions taken by the subject vehicle and equipment manufacturers, this investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exists on other model or model year vehicles outside of the recall scopes. The agency reserves the right to take further action if warranted by the circumstances.