NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
12 reportsClear category filterMileage unknown · May 19, 2026
EngineFuel/propulsion System
The catalytic converter heat exchanger failed internally, causing coolant to leak into the exhaust system. Symptoms included white smoke from exhaust and coolant loss with no visible ground leak. This is a documented factory defect per Toyota Technical Service Bulletin T-SB-0135-19 affecting 2016-2019 Prius models. Toyota has de…
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The catalytic converter heat exchanger failed internally, causing coolant to leak into the exhaust system. Symptoms included white smoke from exhaust and coolant loss with no visible ground leak. This is a documented factory defect per Toyota Technical Service Bulletin T-SB-0135-19 affecting 2016-2019 Prius models. Toyota has denied warranty coverage despite the vehicle was originally bought & spent its entire prior operational life registered in New York, a state covered under Toyota's full 15-year/150,000-mile emissions warranty. Defect was confirmed by an authorized Toyota dealership, in PA. Vehicle had approximately 83,104 miles at time of diagnosis. Manufacturer denied coverage and is forcing the customer (me) to pay a huge amount for this very well known & defective case. MOST IMPORTANTLY ITS dangerous and unsafe for all the cars our there too, since it is very well known that at a certain point this will happen, but despite TOYOTA never sent a RECALL. Due to this, engine light goes on & off, refrigerant is flammable and leaks in the exhaust pipe happens with this specific case, which ultimately could catch on fire, while the vehicle is moving or stalling. Lots of white smoke comes out of the car that directly impact the environmental aspects, and above all, people owning such vehicle, will be running into this issue, which will 100% put the safety of owner and anyone close in proximity to their vehicle at RISK. PLEASE ADD RECALL WITHOUT CAP for ALL SUCH TOYATA PRIUS due to flammable refrigerant leak inside the car engine components, and proven via strong white smoke coming out of exhaust that has the potentially to put the entire car on fire, specifically.
NHTSA ODI #11738755
Mileage unknown · Nov 21, 2024
EngineFuel/propulsion System
Dear NHTSA, I am seeking assistance and compensation for ongoing warranty and repair issues with my Toyota Prius. Key Incident Timeline: •March 21, 2024: Dashboard message “Grille Shutter Inoperable” •March 25, 2024: Toyota of Glendale visit •Charged $220 for diagnostics •Refused to honor service bulletin •Vehicle mileage: 149,2…
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Dear NHTSA, I am seeking assistance and compensation for ongoing warranty and repair issues with my Toyota Prius. Key Incident Timeline: •March 21, 2024: Dashboard message “Grille Shutter Inoperable” •March 25, 2024: Toyota of Glendale visit •Charged $220 for diagnostics •Refused to honor service bulletin •Vehicle mileage: 149,217 Customer Service Interactions: •April 9, 2024: •Contacted Toyota customer service •Confirmed CA emissions coverage to 150,000 miles •Discovered extended warranty unexpectedly canceled Brand Engagement Claim: •April 9, 2024: Filed claim with Toyota’s Brand Engagement line •June 26, 2024: Claim denied, dealership’s decision upheld Repair Challenges: •July 5, 2024: Wondries Toyota diagnostic visit •Charged $200 for diagnostics •Confirmed active service bulletins would have covered repairs Repair Management: •Northeast Mechanic has handled all subsequent repairs due to Toyota’s failures Financial Losses Breakdown: •Initial diagnostic fee (Toyota of Glendale): $220.00 •Diagnostic fee (Wondries Toyota): $200.00 •Car rental (July 6, 2024 - Hertz): $1,356.17 •Car parts: $1,706.55 •Labor on vehicle: $754.22 •Water pump: $167.78 •Head Gasket, Spark Plugs, Engine Water Pump: $2,161.00 •Total financial loss: $6,565.72 I request a comprehensive investigation into these warranty and repair issues, seeking full compensation for the financial burden caused by Toyota’s repeated failures. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11626715
Mileage unknown · Jul 22, 2024
Engine
Coolant leaking into exhaust And engine also vehicle suddenly stops for no reason now engine is completely broken due to the coolant going into the motor oil
NHTSA ODI #11603676
Mileage unknown · Jul 3, 2024
EngineFuel/propulsion System
Dashboard pop up came up saying that the grille shutter is inoperable to visit a dealer. Went online and noticed there were recalls for my Prius year and because emissions is affected I contacted Toyota financial customer service who said to go to a dealer and that they would fix no charge. Went three times to the dealer and the…
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Dashboard pop up came up saying that the grille shutter is inoperable to visit a dealer. Went online and noticed there were recalls for my Prius year and because emissions is affected I contacted Toyota financial customer service who said to go to a dealer and that they would fix no charge. Went three times to the dealer and they did not want to honor the recall. Charged me $200 to run diagnostics on the vehicle and confirmed that the code that was being recalled matched. They made excuses and in the end did not fix. The pop up appeared March 2024 and since then I now have another pop up appear about the hybrid system overheating due to them not fixing. I went to a local mechanic who said it was the dealers responsibility since there are service bulletins but they do not want to help. The car has stalled out on the freeway almost leaving me to get hit and my fuel has gotten worse.
NHTSA ODI #11598469
80,000 miles · Oct 3, 2023
Engine
The contact owns a 2017 Toyota Prius. The contact stated while driving 10 MPH and pulling out of a parking lot, the vehicle lost motive power and made abnormal sounds. Several unknown warning lights were illuminated. The vehicle failed to restart, and was towed to the dealer, where it was diagnosed that the head gasket was blown…
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The contact owns a 2017 Toyota Prius. The contact stated while driving 10 MPH and pulling out of a parking lot, the vehicle lost motive power and made abnormal sounds. Several unknown warning lights were illuminated. The vehicle failed to restart, and was towed to the dealer, where it was diagnosed that the head gasket was blown, causing damage to the engine. The dealer informed the contact that the engine needed to be replaced. The vehicle was not repaired. The vehicle was taken to an independent mechanic, where the same assessment was made. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that they could not assist because the vehicle was out of warranty. The failure mileage was approximately 80,000.
NHTSA ODI #11548042
Mileage unknown · Apr 12, 2022
EngineVehicle Speed Control
I had just changed from the right-hand lane to the center lane of a six-lane expressway when my vehicle lost power and i was able to move over to the right hand shoulder of the road. The accelerator pedal did not work and I just coasted to the side of the road. I noticed that a red warning saying something about RADAR flashed…
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I had just changed from the right-hand lane to the center lane of a six-lane expressway when my vehicle lost power and i was able to move over to the right hand shoulder of the road. The accelerator pedal did not work and I just coasted to the side of the road. I noticed that a red warning saying something about RADAR flashed on the instrument panel when this happened. I turned off the vehicle and tried to restart it, but nothing happened. I then texted the person who was expecting me and explained the problem. Since I had just taken the car to the dealer for its regular 40,000 mile service four days earlier, I intended to call my dealer to ask them what to do. All of this took about 10 minutes with the engine turned off. Before doing this, I again tried to restart it. It started and I inched it forward on the shoulder of the road. Since I did not feel safe parked on the shoulder, I merged into traffic and took it to another Toyota dealer. They said that they could not look at my vehicle to diagnose what might be wrong because all their technicians were going home at 4 pm. I drove to my son's house and he suggested that I report this to you. Something similar happened to him when he was driving this same vehicle about six month ago. He was driving on a city street, did not notice any dashboard warning, and took it to this same dealer. They were not able find anything wrong. I felt I should report this since this is the second time this vehicle suddenly lost power. My incident happened when I was driving at expressway speed and could have caused a serious accident had I not been able to coast to the shoulder of the road.
NHTSA ODI #11460605
25,825 miles · Dec 9, 2019
Engine
TL* THE CONTACT OWNS A 2017 TOYOTA PRIUS. WHILE DRIVING 65 MPH, THE VEHICLE LOST POWER. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO LONGO TOYOTA (3534 N PECK RD, EL MONTE, CA 91731, (855) 415-6497), BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS CONTACTED AND DID NOT ASSIST. THE FAILURE MILEAG…
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TL* THE CONTACT OWNS A 2017 TOYOTA PRIUS. WHILE DRIVING 65 MPH, THE VEHICLE LOST POWER. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO LONGO TOYOTA (3534 N PECK RD, EL MONTE, CA 91731, (855) 415-6497), BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS CONTACTED AND DID NOT ASSIST. THE FAILURE MILEAGE WAS 25,825. THE VIN WAS NOT AVAILABLE.
NHTSA ODI #11287988
15,140 miles · Jul 25, 2019
EngineService BrakesUnknown Or Other
THIS IS FOR 2017 TOYOTA PRIUS PRIME, BUT THERE IS NO OPTION. WHILE TAKING MY KID TO ENROLL IN SWIMMING CLASS, WHILE TAKING TURN INTO THE FACILITY THE BRAKES STOPPED WORKING AND THE CAR WOULDN'T STOP, SOME HOW I DROVE INTO PARKING LOT (I AM NOT SURE HOW I DID IT IN THAT TENSE SITUATION) NONE OF THE BUTTONS WERE WORKING, THE CAR W…
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THIS IS FOR 2017 TOYOTA PRIUS PRIME, BUT THERE IS NO OPTION. WHILE TAKING MY KID TO ENROLL IN SWIMMING CLASS, WHILE TAKING TURN INTO THE FACILITY THE BRAKES STOPPED WORKING AND THE CAR WOULDN'T STOP, SOME HOW I DROVE INTO PARKING LOT (I AM NOT SURE HOW I DID IT IN THAT TENSE SITUATION) NONE OF THE BUTTONS WERE WORKING, THE CAR WAS BEEPING SHOWING EVERY THING FAILED AND BY GODS GRACE THE HAND BRAKE WORKED AND FINALLY THE CAR STOPPED. NOW I AM SCARED AS THIS HAPPENED WITH MY KID IN THE CAR. I NEED HELP AND I DON'T WANT TO DRIVE THIS CAR AGAIN AND I TOWED IT TO THE TOYOTA DEALER. AFTER EXITING I CALMED DOWN A LITTLE BIT CALLED MY HUSBAND AND HE RECORDED THE ERRORS AND THE SOUNDS. I THOUGHT THE CAR WAS GOING TO BLOW UP.
NHTSA ODI #11234809
19,700 miles · Mar 28, 2019
EngineFuel/propulsion SystemService Brakes
WHILE I AM SLOWING TO A STOP, A WARNING LIGHT COMES ON INDICATING THAT I AM PRESSING THE BRAKE AND THE ACCELERATOR AT THE SAME TIME. THIS IS NOT POSSIBLE. THE CAR DOES TRY TO MOVE FORWARD BUT PRESSURE ON THE BRAKE OVERCOMES THAT ISSUE. THIS HAS HAPPENED MULTIPLE TIMES (NOT EVERY TIME) BUT FORTUNATELY NO ACCIDENTS HAVE OCCURRED…
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WHILE I AM SLOWING TO A STOP, A WARNING LIGHT COMES ON INDICATING THAT I AM PRESSING THE BRAKE AND THE ACCELERATOR AT THE SAME TIME. THIS IS NOT POSSIBLE. THE CAR DOES TRY TO MOVE FORWARD BUT PRESSURE ON THE BRAKE OVERCOMES THAT ISSUE. THIS HAS HAPPENED MULTIPLE TIMES (NOT EVERY TIME) BUT FORTUNATELY NO ACCIDENTS HAVE OCCURRED. THIS HAS ALSO NEVER HAPPENED WHEN I AM DRIVING AT HIGHWAY SPEED AND NEED TO BRAKE.
NHTSA ODI #11192168
Mileage unknown · Mar 15, 2019
Engine
TL* THE CONTACT OWNS A 2017 TOYOTA PRIUS. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR NHTSA CAMPAIGN NUMBER: 18V579000 (ENGINE). THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. TOYOTA CERTIFIED AT CAPITAL PLAZA (6100 ANNAPOLIS RD, LANDOVER, MD 20784, (301) 772-6900) WAS CON…
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TL* THE CONTACT OWNS A 2017 TOYOTA PRIUS. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR NHTSA CAMPAIGN NUMBER: 18V579000 (ENGINE). THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. TOYOTA CERTIFIED AT CAPITAL PLAZA (6100 ANNAPOLIS RD, LANDOVER, MD 20784, (301) 772-6900) WAS CONTACTED AND CONFIRMED THAT THE PART WAS NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND WAS NOT ABLE TO CONFIRM WHEN THE PART WOULD BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.
NHTSA ODI #11186987
Official recalls
3Sep 5, 2018
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2016-2018 Toyota Prius vehicles. A portion of the engine wire harness connected to the hybrid Power Control Unit (PCU), could contact the cover at this connection and wear, causing an electrical short circuit.
Consequence & remedy
Consequence: An electrical short can increase the risk of a fire.
Remedy: Toyota will notify owners, and dealers will inspect the engine wire harness assembly and replace it if damage is found. A protective sleeve or protective tape will be included to prevent any future damage. These repairs will be performed free of charge. The recall began October 30, 2018. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is J0T.
May 2, 2017
Gulf States Toyota, Inc. (Gulf States) is recalling certain 2017 4Runner , 86, Avalon, Camry, Camry Hybrid, Corolla, Corolla iM, Highlander, Highlander Hybrid, Prius, Prius C, RAV4, RAV4 Hybrid, Sienna and Yaris vehicles. The spare tire air pressure was not adjusted to the proper pressure as stated on the Tire Pressure Label.
Consequence & remedy
Consequence: A spare tire that is not inflated to the proper value may not perform as intended, increasing the risk of a crash.
Remedy: Gulf States will notify owners, and dealers will inspect the spare tires, adjusting their pressure as necessary, free of charge. The recall began June 15, 2017. Owners may contact Gulf States customer service at 1-800-444-1074. Toyota's number for this recall is 17R2.
Oct 14, 2016
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2016-2017 Prius vehicles manufactured August 6, 2015, to October 3, 2016. The affected vehicles are equipped with a foot-operated parking brake system that has a parking brake cable that may disengage.
Consequence & remedy
Consequence: If the parking brake cable disengages from the mechanism and the transmission is left in a gear other than 'Park' while the ignition is on and the driver leaves the vehicle, the vehicle may roll unexpectedly, increasing the risk of a crash.
Remedy: Toyota will notify owners, and dealers will install a clip at the parking brake cable end to prevent the cable from disengaging, free of charge. The recall began November 10, 2016. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is G01.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗