NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
207 reportsMileage unknown · May 29, 2017
Vehicle Speed ControlCrash
SUDDEN UNINTENDED ACCELERATION. 2014 PRIUS WAS PARKED FOR A FEW DAYS IN HOT, HUMID WEATHER. WHEN PULLING THE CAR INTO THE DRIVEWAY AT A LOW SPEED, THE CAR SUDDENLY ACCELERATED TO A VELOCITY FAST ENOUGH TO COLLIDE WITH AN SUV PARKED IN THE DRIVEWAY, KNOCKING IT THROUGH A METAL FENCE AND INTO THE BACKYARD. IT ALSO CAUSED THE DR…
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SUDDEN UNINTENDED ACCELERATION. 2014 PRIUS WAS PARKED FOR A FEW DAYS IN HOT, HUMID WEATHER. WHEN PULLING THE CAR INTO THE DRIVEWAY AT A LOW SPEED, THE CAR SUDDENLY ACCELERATED TO A VELOCITY FAST ENOUGH TO COLLIDE WITH AN SUV PARKED IN THE DRIVEWAY, KNOCKING IT THROUGH A METAL FENCE AND INTO THE BACKYARD. IT ALSO CAUSED THE DRIVER OF THE PRIUS WHIPLASH AND A HEAD INJURY. THE BRAKE PEDAL WAS DEPRESSED AS THE CAR ACCELERATED. WE BELIEVE THAT THE CAR ONLY STOPPED ACCELERATING WHEN THE RADIATOR WAS PUSHED INTO THE ENGINE BY THE IMPACT WITH THE BUMPER OF THE SUV.
NHTSA ODI #10992060
35,000 miles · May 16, 2017
Electrical System
RODENTS CHEWED ELECTRICAL WIRING MAKING THE VEHICLE UNSAFE TO DRIVE. THE ELECTRONIC SENSORS WERE RENDERED INOPERABLE. THE VEHICLE WAS PARKED IN MY GARAGE FOR THE WEEK END. NEVER HAD THIS PROBLEM WITH MY OTHER VEHICLES PARKED IN SAME GARAGE! REPAIR COST,NOT COVERED UNDER WARRANTY WAS $ 1100.00.
NHTSA ODI #10986015
60,000 miles · May 3, 2017
Service BrakesVehicle Speed ControlCrash
VEHICLE INCREASED ACCELERATION WHILE MAKING A RIGHT-HAND TURN AND BRAKING, INTO A COVERED PARKING STALL. VEHICLE DID NOT STOP UNDER BREAKING UNTIL FRONT END WENT OVER CEMENT PARKING BUMPER.
NHTSA ODI #10983408
30,000 miles · Apr 11, 2017
Service Brakes
TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. WHILE DRIVING, THE BRAKE PEDAL WAS APPLIED, BUT THE VEHICLE FAILED TO RESPOND.THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT INCLUDED IN A RECALL. THE CONTACT DID NOT WANT TO PAY FOR THE REPAIR B…
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TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. WHILE DRIVING, THE BRAKE PEDAL WAS APPLIED, BUT THE VEHICLE FAILED TO RESPOND.THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT INCLUDED IN A RECALL. THE CONTACT DID NOT WANT TO PAY FOR THE REPAIR BECAUSE THE VEHICLE WAS STILL NEW AND SHOULD NOT HAVE ANY ISSUES. THE FAILURE MILEAGE WAS 30,000.
NHTSA ODI #10971881
Mileage unknown · Jan 30, 2017
Electrical SystemEngineUnknown Or Other
RODENTS CHEWED THROUGH MAJORITY OF THE WIRING UNDER THE HOOD AND BUILD NESTS IN THE ENGINE. THIS HAS HAPPENED TWICE AND I HAVE ONLY OWNED THE CAR FOR 5 MONTHS AND COST ME A LOT OF MONEY FOR REPAIRS WHICH TOYOTA WILL NOT COVER AND SAID IT IS NOT THEIR RESPONSIBILITY FOR USING THESE SOY BASED WIRES THAT ATTRACTS RODENTS.
NHTSA ODI #10948489
22,512 miles · Jan 23, 2017
Air BagsElectrical SystemElectronic Stability Control (esc)
SEAT BELT LIGHT STAYED ON, SWERVE LIGHT OCCASIONALLY. PROVED TO BE RODENT DAMAGE ON WIRE INSTRUMENTS AND BLOWER, PANEL INSTRUMENT, ANTENNA ASSEMBLIES REACHING $3,900. VEHICLE PARKED OUTSIDE RESIDENTIAL BUILDING ON PUBLIC STREET IN COLD RAINY WEATHER. VEHICLE IN EXCELLENT CONDITION. NEVER HAD SUCH A PROBLEM WITH ANY OTHER VEHICLE…
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SEAT BELT LIGHT STAYED ON, SWERVE LIGHT OCCASIONALLY. PROVED TO BE RODENT DAMAGE ON WIRE INSTRUMENTS AND BLOWER, PANEL INSTRUMENT, ANTENNA ASSEMBLIES REACHING $3,900. VEHICLE PARKED OUTSIDE RESIDENTIAL BUILDING ON PUBLIC STREET IN COLD RAINY WEATHER. VEHICLE IN EXCELLENT CONDITION. NEVER HAD SUCH A PROBLEM WITH ANY OTHER VEHICLES WHILE LIVING HERE OVER 20 YEARS. COULD SOY BASED ENCASING AROUND WIRING CONTRIBUTE TO THIS? *TR
NHTSA ODI #10947274
21,000 miles · Dec 16, 2016
Fuel/propulsion SystemService BrakesCrash
WHILE I WAS DOING A SLOW TURN IN A DRIVEWAY, MY BRAKE FAILED AND THE CAR CONTINUED TO ACCELERATE IN A FORWARD MOTION. WHEN I SHIFTED INTO REVERSE, THE CAR REVVED AND ROARED ACCELERATING AT FULL TILT. IT RACED ACROSS A ROAD INTO ANOTHER DRIVEWAY ONLY STOPPING WHEN WEDGED BETWEEN A GARAGE DOOR AND A TREE. TOYOTA TOOK THE TOTALE…
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WHILE I WAS DOING A SLOW TURN IN A DRIVEWAY, MY BRAKE FAILED AND THE CAR CONTINUED TO ACCELERATE IN A FORWARD MOTION. WHEN I SHIFTED INTO REVERSE, THE CAR REVVED AND ROARED ACCELERATING AT FULL TILT. IT RACED ACROSS A ROAD INTO ANOTHER DRIVEWAY ONLY STOPPING WHEN WEDGED BETWEEN A GARAGE DOOR AND A TREE. TOYOTA TOOK THE TOTALED CAR AND HAD IT INSPECTED BY ENGINEERING ASSOCIATES AND INSURANCE AUTO AUCTIONS. THEIR RESPONSE IS THAT "THERE WAS NO SERIOUS DEFECTS IDENTIFIED." OBVIOUSLY, THE MOMENTARY MECHANICAL OR ELECTRONIC FAILURE OF MY CAR COULD NEVER BE DETECTED, SO ACCORDING TO TOYOTA, THERE WAS NOTHING TO CAUSE THE FAILURE. I FEEL TOTALLY VICTIMIZED AND BELIEVE TOYOTA SHOULD TAKE RESPONSIBILITY AND COMPENSATE ME FOR THE LOSS OF MY CAR.
NHTSA ODI #10935859
19,483 miles · Jul 12, 2016
Electrical SystemEngine
HEADLIGHTS AND CABIN LIGHTS FAILED TO TURN OFF WHEN REMOTE LOCK WAS ACTIVATED. LIGHTS WERE THEN TURNED OFF MANUALLY. FIVE HOURS LATER, IN THE PARKING LOT, THE CAR WAS NEARLY COMPLETELY DEAD. LAST TIME IT HAPPENED, WE LEFT IT AND IT RECHARGED ITSELF. THIS TIME, IT DID NOT RECHARGE ITSELF; IT WAS COMPLETELY DEAD THE NEXT DAY. …
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HEADLIGHTS AND CABIN LIGHTS FAILED TO TURN OFF WHEN REMOTE LOCK WAS ACTIVATED. LIGHTS WERE THEN TURNED OFF MANUALLY. FIVE HOURS LATER, IN THE PARKING LOT, THE CAR WAS NEARLY COMPLETELY DEAD. LAST TIME IT HAPPENED, WE LEFT IT AND IT RECHARGED ITSELF. THIS TIME, IT DID NOT RECHARGE ITSELF; IT WAS COMPLETELY DEAD THE NEXT DAY. WE HAD TO HAVE IT TOWED TO THE DEALERSHIP, WHO "JUMPED" IT AND LET IT SIT OVERNIGHT. THEY SAY IT NOW HAS NO PROBLEM.
NHTSA ODI #10884290
21,300 miles · May 5, 2016
Visibility/wiper
TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. WHILE DRIVING 55 MPH, ALL FOUR DOOR WINDOWS HAD LONG SCRATCHES THAT CREATED HOLES IN THE WINDOWS. THE SCRATCHES WOULD NOT ALLOW THE CONTACT TO SEE THROUGH THE REARVIEW MIRROR. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFI…
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TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. WHILE DRIVING 55 MPH, ALL FOUR DOOR WINDOWS HAD LONG SCRATCHES THAT CREATED HOLES IN THE WINDOWS. THE SCRATCHES WOULD NOT ALLOW THE CONTACT TO SEE THROUGH THE REARVIEW MIRROR. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 21,300.....UPDATED 0711/16 *BF *CN
NHTSA ODI #10863400
42,000 miles · May 2, 2016
Visibility
TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. THE CONTACT STATED THAT THE DRIVER AND PASSENGER SIDE SUN VISORS WERE FRACTURED. THE VEHICLE WAS TAKEN TO THE DEALER, BUT WAS NOT REPAIRED BECAUSE THE MILEAGE WAS OUT OF WARRANTY. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 42,000. UPDATED 09/22…
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TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. THE CONTACT STATED THAT THE DRIVER AND PASSENGER SIDE SUN VISORS WERE FRACTURED. THE VEHICLE WAS TAKEN TO THE DEALER, BUT WAS NOT REPAIRED BECAUSE THE MILEAGE WAS OUT OF WARRANTY. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 42,000. UPDATED 09/22/16*LJ *CN
NHTSA ODI #10862592
NHTSA investigations
3DP23005 · Brake Actuator Valve Wear
Opened Nov 22, 2023 · No close date supplied
Status: open (inferred from source dates) · Service Brakes, Hydraulic:foundation Components; Service Brakes, Hydraulic:power Assist
The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additional related complaints and crashes via a new defect petition The petition and related materials can be reviewed at NHTSA.gov under the following ODI number:11553736.
Additional source detail variants (2)
Service Brakes, Hydraulic:foundation Components
The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additional related complaints and crashes via a new defect petition The petition and related materials can be reviewed at NHTSA.gov under the following ODI number:11553736.
Service Brakes, Hydraulic:power Assist
The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additional related complaints and crashes via a new defect petition The petition and related materials can be reviewed at NHTSA.gov under the following ODI number:11553736.
DP22005 · Pedestrian Alert Sounds
Opened Jan 27, 2023 · Closed Aug 7, 2023
Status: closed (inferred from source dates) · Electrical System:propulsion System
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.
DP19004 · Brake Actuator Valve Wear
Opened Sep 30, 2019 · Closed Jan 21, 2021
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:power Assist
On September 19, 2019, the Office of Defects Investigation (ODI) received a defect petition from Mr. Roger Hogan requesting that the Agency investigate and recall certain Toyota Prius, Prius PHV, Camry Hybrid and Avalon Hybrid vehicles for a brake actuator valve wear condition covered under Toyota Customer Support Programs ZJB and ZKK (subject CSP?s). In support of his request, the petitioner identified 117 NHTSA complaints allegedly related to the subject CSP condition, including 60 reporting crashes. On September 30, 2019, ODI opened Defect Petition DP19-004 to evaluate the petitioner?s request for an investigation. In August 2020, the petitioner notified the Agency that he was withdrawing his petition. Because the petitioner has withdrawn the petition, we are denying the petition as moot and no further analysis of this petition is necessary.NHTSA is authorized to issue an order requiring notification and remedy of a defect if the Agency?s investigation shows a defect in the design, construction, or performance of a motor vehicle that presents an unreasonable risk to safety. 49 U.S.C. ?? 30102(a)(9), 30118. Because the petitioner has with withdrawn the petition, the petition is denied as moot. This action does not constitute a finding by NHTSA that a safety-related defect does not exist. The Agency notes that it is not required to receive a defect petition prior to opening a defect investigation and will take further action if warranted by future circumstances.
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