The brakes failed while driving at a high speed (55 MPH) on the highway along with failing when braking at a low speed (15 MPH) near a major intersection. This occured with no warning other than the Brake, ABS, and Traction Control appearing as the failure was occuring. The warning light when away after the first occurance and the brakes began working again within a few moments. It then reoccured and the lights did not turn off and the car began beeping. My safety, along with my passengers safety and the safety of those who were in the area was put at risk. The highway failure occured in a high traffic area which was also a construction zone so workers were at risk. It has been confirmed by an independent service center that the Power Brake Booster and Brake Master Cylinder Assembly failed. There were no sypmtoms or warning prior to this dangerous failure. After researching this issue, I have found that this is a common issue but no recall has been issued, only a Customer Support Program Bulletin, of which I never received. This is extremely troubling due to the nature of brake failure at both high and low speeds can put not only the driver at risk but those who are near the vehicle experiencing the brake failure. Repairs are currently in process at the cost of approximatly $3,200.
The worst 2014 Toyota Prius C problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes9
- Engine7
- Electrical6
- Acceleration4
- Airbags3
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes9
- Engine7
- Electrical6
- Acceleration4
- Airbags3
- Lights3
- Steering3
- Wheels3
- Body2
- Transmission2
- Driver assistance1
- Fuel system1
- Seat belts1
- Suspension1
Trouble codes owners of the 2014 Toyota Prius C mention
C1391 2
Recalls
No recalls on record for this model year.
Defect investigations
Pedestrian alert sounds
the federal safety agency 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 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, the federal safety agency 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 the federal safety agency 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 the federal safety agency regarding the subject matter of the petition.
DP22005
Technical service bulletins for the 2014 Toyota Prius C 294
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Obsolete notice
- This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries
- Condition in which a musty odor is present
- The air conditioning dye injection tool kit has been developed to aid in identifying the location of air...
- Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical...
- To prevent brake rotor rust from forming during transportation and storage, wheel film will be used...
- The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix...
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad...
- Condition in which a musty odor is present
2014 Toyota Prius C fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 1.5L 4‑cyl Hybrid | FWD | 53 | 46 | 50 |
What 2014 Toyota Prius C owners say
Most recent owner complaints, unedited.
Brake actuator assembly known issue in Prius C, Toyota refuses to do anything about it. Part is not cheap.
While driving, suddenly all brake lights and warning lights went on, and brakes stopped working normally. It became difficult to brake (brake took a while to engage - had to press pedal to the floor). After diagnostics at the dealership it looks like the brake booster failed. Apparently Toyota knew about this issue as they did an extended warranty through a Customer Support Program, but unfortunately my issue occurred just past the expiration of that warranty. Since brakes are such a critical component of vehicle safety, if they don't operate well or as expected, it endangers the driver and everyone else on the road. It is wild that Toyota is aware of this issue but that there has been no recall yet.
I was told that my Brake Booster and Brake Booster Pump Assembly needed replaced. I had specifically asked my dealership in the past if there were any issues with my car and was told that there was nothing, which was untrue. I called Toyota and was told that I was mailed something back in 2018, but I do not remember receiving it. Now I am told that this has expired. I wanted to know if I had any recourse or extension time on this program 21 TE01. I am afraid that my brakes will not work, as the lights go off and on. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Cruise Control Not Working. Traction Control Light Active, Brake Light Active, And Light Active The cause was diagnosed by Toyota of Paris. TSB for C1391 Code abnormal leak in accumulator. The corrective action is to replace brake booster assembly with Master cylinder and Brake Booster pump Assembly.
We were driving on a city street about 25-30mph and the car jerked suddenly and the lights on the dashboard illuminated and the "Check Hybrid System" message came up as well. The car was able to coast to a nearby parking lot. We attempted to drive the car home and the car stalled in the middle of the street. We were able to push the car off the road and then get it towed. The presented a potentially very dangerous situation as the car had a complete failure while driving in the middle of the road. The Toyota service department ran a diagnosis which returned DTC P0A94. All of this indicates that the car should be covered under the CUSTOMER CONFIDENCE PROGRAM 23TE03 however that program seems to only cover the 2010-2015 Prius and 2011-2017 Prius V models and not the Prius C. There are several reports of this same issue happening on the Prius C as well though so it doesn't make sense that it is not covered.
2014 Toyota Prius C with 220k miles. Four warning lights came on while driving. Brakes became not responsive unless you press down very hard. Regenerative braking, went away. The Brake pump can be audibly heard turning on every few seconds.
My 2014 Toyota Prius C experienced a complete hybrid inverter failure. The part number of the inverter is the same as the one covered under Toyota’s inverter recalls (such as Recall J0V), yet my VIN is not included. The failure created a serious safety concern, as the vehicle lost power while in motion. Toyota’s recall appears to be too limited in scope and may need to be expanded to cover Prius C models that share the same faulty part. I am requesting that the federal safety agency investigate this issue, as it appears to involve the same hardware defect acknowledged in other Prius models.
Code C1391 Master cylinder/ break booster
See attached document for complaint.
Compare the 2014 Toyota Prius C
Other model years
Questions about the 2014 Toyota Prius C
Is the 2014 Toyota Prius C reliable?
Owners have filed 33 complaints about the 2014 Toyota Prius C, 1.8 times a typical Prius C model year.
What is the 2014 Toyota Prius C year score?
The 2014 Toyota Prius C scores 53 out of 100 (below average). The score compares it with the other model years of the Toyota Prius C: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2014 Toyota Prius C?
Brakes, with 9 complaints. Next is engine (7).
How many recalls does the 2014 Toyota Prius C have?
No recalls on record.
What year does the Toyota Prius C have bad brakes?
The Toyota Prius C model years with the most brakes complaints are 2012 (26 complaints) and 2013 (18 complaints).
What gas mileage does the 2014 Toyota Prius C get?
Official estimates for the 2014 Toyota Prius C range from 50 mpg combined. The most efficient version (1.5L 4-cyl hybrid, FWD) gets 53 city and 46 highway.
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