Problems · NHTSA complaints
2015 Toyota Prius Plug-in Hybrid problems
Owners filed 120 complaints about the 2015 Toyota Prius Plug-in Hybrid with NHTSA between Jan 2015 and Nov 2025. The most-cited component is service brakes (51).
Complaints
120
Filed with NHTSA
Crashes
26
Reported by owners
Fires
1
Reported by owners
Injuries
13
People reported injured
Deaths
3
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Service brakes51
- Electrical system23
- Power train13
- Vehicle speed control8
- Exterior lighting7
- Fuel/propulsion system6
- Structure6
- Engine6
- Air bags6
- Visibility/wiper4
- Hybrid propulsion system3
- Steering3
- Suspension3
- Seat belts2
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 6, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
11
14
10
8
12
10
11
7
6
9
22
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2015 | 11 |
| 2016 | 14 |
| 2017 | 10 |
| 2018 | 8 |
| 2019 | 12 |
| 2020 | 10 |
| 2021 | 11 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 22 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Service brakes
51 reports11 crashes
“The ABS, BREAK, and Traction Control, suddenly turned on when I was traveling on the freeway in mild traffic. I was traveling at about 60-65 mph. I attempted to use the breaks and could feel a substantial difference in how much and how hard I had to push in order to stop. The problem has not been confirmed by a dealer or service center. The vehicle was inspected by my brother in law who works on cars frequently. There were no warning symptoms prior to the problem. The problem first occurred on Saturday November 1st at about 12:30. According to my brother in law, it was the break pump that failed; you can hear air escaping when you push on the break pedal.”
Electrical system
23 reports4 crashes1 fire
“The headlight bulbs keep going out. I have replaced the bulbs at least 2-3 times a year for the past few years. I have asked dealers about this and they tell me there is no recall or tsb. This is a hazard to night driving because of decreased illumination, especially in dark roads with not enough lighting. Please recall/fix this issue!!”
Power train
13 reports4 crashes
“My mom was involved in an accident in her 2015 Toyota Prius on April 19, 2022, which she advised lurched forward at a stop and when applying the brakes to stop the vehicle, she said was unresponsive, causing her to clip a vehicle and sending her vehicle into a ditch totaling her car and injuring her passenger and her. I would like to have this investigated and hold Toyota responsible. This could have been much worse and lives could have been lost. She is now without means of transportation, and she is now possibly responsible for damages to property and bodily injury because of this. Through my research I have discovered multiple class action lawsuits brought against Toyota for the same exact models. I asked the police officer to run a scan on the computer, but he advised it was only for serious accidents. There was no indication of the problem or messages.”
Vehicle speed control
8 reports7 crashes
“ANYTIME I CHANGE ELEVATIONS THE ENGINE SEEMS TO REV WHEN IT IS IDLING ON CRUISE CONTROL. ON THE DOWNHILL, THE CAR WILL ACCELLERATE TO IGNORE THE SPEED ON CRUISECONTROL TO DANGEROUS HIGH VELOCITY. I REPORTED THIS TO TOYOTA OF NORTH HOLLYWOOD THREE TIMES... IT WAS NEVER ADDRESSED.”
Exterior lighting
7 reports1 crash
“My vehicle has an ongoing issue with the headlights not being bright enough to drive at night with. I have replaced the headlights more than 5 times now over the course of a year, each time with different brands including Toyota OEM headlights. Each time, they are still not sufficiently bright enough to see with at night. This has led to 3 collisions with curbs and objects which caused damage to my vehicle, because I could not see the objects while having to drive at night. I have brought the issue up to Toyota and they said they would not do anything about it. I brought it in for service to Toyota and they tried to charge me $200 to even look at it, money which I do not have. I am forced to continue driving at night for work and fear I will get into a more serious crash or hit a pedestrian as the headlights aren't bright enough to see safely at night. The photo I have included shows a gash in the tire and dent in the rim where it hit the curb. The issue seems to be the headlight wiring or connectors. When I replace the headlight bulbs, they are a bit brighter initially. Thus initial brightness only lasts about a week, and it's still not sufficiently bright to…”
Fuel/propulsion system
6 reports1 crash
“I am having a hybrid propulsion system issue due to a part that was recalled according to this ID number for the NHTSA 17V718000 that was posted NOV 14, 2017 and my car does seem to be affected because it is facing the same issues as other cars reported from that batch. I want to make sure that I can have it serviced properly at my dealership”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 6, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.