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Engine & cooling

Toyota Prius C Engine problems by year

102 complaints filed with NHTSA about the Toyota Prius C's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20181110
201712000
201617000
20159210
201421110
201342200

Latest Prius C engine complaints

2015 Toyota Prius CElectrical systemEngine & cooling

While driving the hybrid battery light turned on. The car then began to reduce its speed and I had to pull over. I restarted the car and on one of the fuses to the computer to restart it. I began to drive the car back home and it did it again. I recently had a hybrid battery replaced in the vehicle. I was on the freeway both times and this caused me a lot of anxiety. There were two individuals in the vehicle, which both were at risk of being injured if there was a collision. We need it to pull over within less than...

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30 seconds. They appeared in the morning and a year prior. A year previously I replaced the battery. There was an odd buzzing sound in the back of the driver seat were the vent was.

Filed Incident Electrical system · EngineNHTSA 11748313
2013 Toyota Prius CEngine & coolingFire

Pulled out of the driveway drove about a 100 ft heard large clunking sound front end dropped down as if there was a flat tire pulled off the highway drove through the grass 100 ft back to my home the car started smoking from the engine compartment and burst into flames. Tried to extinguish with fire extinguishers and water hose while calling 911. Fire Department extinguished the fire. Car is a complete loss. There was an oil leak trail from where the car first drop down through the grass. The car did not have a previous oil leak. The car had 300,000 miles on it. No one was injured.

Filed Incident Unknown or other · EngineNHTSA 11669902
2016 Toyota Prius CEngine & cooling

Water pump failed without warning and caused irreparable damage to the engine ("blown" engine requiring replacement). Vehicle began to stall and not respond to attempted acceleration while traveling on 4 lane divided highway, 55 mph speed limit. One "Maintenance Required" message was received the previous week, but disappeared. This is the same message that appears for routine oil changes. No other warning messages were noted at the time of the incident, no unusual noises, and no smoke or other sign of...

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overheating. Driver was able to steer vehicle to safety, but this failure could result in stranding on a busy, dangerous interstate highway. For such a critical piece of the vehicle (i.e., the water pump), there should be obvious warning message(s) and dedicated monitoring of the equipment.

Filed Incident EngineNHTSA 11648235
2017 Toyota Prius CEngine & cooling

The contact owns a 2017 Toyota Prius. The contact stated that while driving approximately 25-30 MPH, the vents were blowing out cold air. The check engine warning light was illuminated. The contact was adding coolant to the coolant reservoir every three to four days. The vehicle was taken to the local dealer, where it was diagnosed and determined that the coolant was leaking into the exhaust pipe. The dealer recommended that the exhaust system front pipe be replaced. The manufacturer was contacted, opened a case, and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 81,700.

Filed Incident Engine and engine coolingNHTSA 11645348
2016 Toyota Prius CEngine & cooling

Refer to TSB 0135-19 dealer denied repairing under the California emissions defect and performance warranty.

Filed Incident EngineNHTSA 11638452
2017 Toyota Prius CEngine & coolingFuel 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: 149,217 Customer Service Interactions: •April 9, 2024: •Contacted Toyota customer service •Confirmed CA emissions coverage to 150,000 miles •Discovered extended warranty unexpectedly canceled...

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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, [[redacted]] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Incident Engine · Fuel / propulsion systemNHTSA 11626715
2017 Toyota Prius CEngine & cooling

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

Filed Incident EngineNHTSA 11603676
2016 Toyota Prius CTransmission & drivetrainElectrical systemEngine & cooling

During summer months when temperatures are above 100 degrees when accelerating from a complete stop I can hear the engine rev and the RPMs increase but the vehicle will move at 1-2 mph. Even if the accelerator is to the floor. After 3-4 seconds the tires will squeal and the vehicle will be jolted forward then it will slowly accelerate. This happens occasionally and I have taken it to a Toyota dealership and a chain mechanic shop, neither have been able to recreate the problem. There are no warnings and no error...

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codes. I have been stuck in the middle of intersections trying to turn left, I have not been hit, but I fear it will happen. There is a recall out for this issue on other Priuses and I believe the issue needs to be investigated further as there is another complaint on this site for the same issue and I have found it on other sites. I bought the car in fall of 2019 and this problem has been occurring since summer of 2020.

Filed Incident Power train · Electrical system · EngineNHTSA 11600638
2017 Toyota Prius CEngine & coolingFuel 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 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...

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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.

Filed Incident Engine · Fuel / propulsion systemNHTSA 11598469
2013 Toyota Prius CElectrical systemEngine & cooling

The contact owns a 2013 Toyota Prius. The contact stated while driving approximately 5 to 10 MPH, the vehicle stalled. The contact was able to restart the vehicle, but the failure persisted. There were no warning lights illuminated. The vehicle was taken to an independent mechanic, who replaced the battery on two occasions, but the failure reoccurred. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 173,699.

Filed Incident Electrical system · EngineNHTSA 11594995
2014 Toyota Prius CEngine & cooling

2014 Toyota Prius: While driving at high speed the engine stalled unexpectedly, steering and braking were not effected. Was able to safely coast to a stop in the breakdown lane and after a few minutes, restart the engine and proceed driving. Another event occurred on the entrance ramp onto an interstate highway. I was able to pull over safely and the car restarted after a short delay. This seems to be a very dangerous condition. Toyota dealer service said they could not determine the cause and they know of no recall. I found online a reference to NHTSA Recall # 20V369000 that referred to "unexpected hybrid power system shut down." That is what happened to me.

Filed Incident Unknown or other · EngineNHTSA 11589472
2013 Toyota Prius CEngine & cooling

I pushed on the gas, the car started mildly shaking under the hood( the engine) then I released my foot off the gas and the shaking ceased. I the. Attempted to accelerate again and the car started violently shaking so I released my foot from the accelerator and turned the car while coasting onto a side road where I traveled back home. Had the car towed to mechanic. He said the engine needs to be replaced as the pistons are damaged. My car has 196,000. I will have the engine replaced as my other 2012 engine just did the same similar thing and I am out two Priuses with blown engines. There were no warning lights and no previous issues or signs prior to the catastrophic events.

Filed Incident EngineNHTSA 11571657

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

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