AutoUtility currently tracks 180 official NHTSA owner defect complaints for the 2015 Toyota Prius. Brakes & Traction Control issues are the most frequently reported category, appearing in 94 complaints (52.2% of submitted records). Among these NHTSA complaint records, 31 filings cite a crash, 1 cites a fire, 13 report one or more injuries, 1 reports one or more fatalities.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
94 owner complaints submitted to NHTSA ODI for this subsystem.
32 owner complaints submitted to NHTSA ODI for this subsystem.
14 owner complaints submitted to NHTSA ODI for this subsystem.
13 owner complaints submitted to NHTSA ODI for this subsystem.
Specific mechanical, electrical, and driver-assist defect symptoms identified via deterministic narrative analysis
6 complaint narratives describe this symptom.
Formal engineering analyses and preliminary evaluations opened by the NHTSA Office of Defects Investigation
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"On XXX, I was driving my 2015 Toyota Prius with my family in the vehicle and approaching stopped traffic on dry pavement. An emergency vehicle was approaching from behind, so I began braking earlier than usual. When I applied the brakes, the vehicle did not stop normally. The front slowed/stopped..."
"Code DTC C1391 - Abnormal leak of accumulator pressure. Internal failure of the brake booster pump assembly, preventing the system from maintaining proper hydraulic pressure. This means the brakes don't work, putting the driver's and passengers' lives at risk. This DTC C1391 code and problem were..."
"I was rear-ended by a truck in my prius and my seat laid back on impact. I'm unaware if that was an intended thing or not but it potentially could have injured my neck. My car is currently in a storage lot awaiting the adjustor's inspection so it is available for inspection if needed. No warning..."
"Pulling out of a parking stall, when put vehicle in drive, the engine revved up and accelerated - vehicle crashed, the brakes did not work- there was skid marks. Floor mats are factory OEM were installed properly. I did not hit the accelerator and I am in good health and mind. I have driving for..."
"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..."
Reported defect complaint volume across sibling model years (2015–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Toyota Prius Current Page | 180 | 31 | 2 | Current |
| 2016 Toyota Prius | 181 | 13 | 5 | View 2016 Problems → |
| 2017 Toyota Prius | 93 | 14 | 3 | View 2017 Problems → |
| 2018 Toyota Prius | 42 | 6 | 3 | View 2018 Problems → |
| 2019 Toyota Prius | 30 | 7 | 4 | View 2019 Problems → |
| 2020 Toyota Prius | 14 | 6 | 0 | View 2020 Problems → |
| 2021 Toyota Prius | 6 | 1 | 0 | View 2021 Problems → |
| 2022 Toyota Prius | 24 | 4 | 1 | View 2022 Problems → |
| 2023 Toyota Prius | 19 | 1 | 4 | View 2023 Problems → |
| 2024 Toyota Prius | 23 | 4 | 4 | View 2024 Problems → |
| 2025 Toyota Prius | 17 | 1 | 2 | View 2025 Problems → |
| 2026 Toyota Prius | 0 | 0 | 1 | View 2026 Problems → |
Complete distribution of consumer defect reports across all 46 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Service Brakes NHTSA category: SERVICE BRAKES | 68 | 5 | 0 | 2 | 0 |
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 15 | 1 | 0 | 0 | 0 |
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 9 | 0 | 1 | 0 | 0 |
| EXTERIOR LIGHTING | 6 | 1 | 0 | 0 | 0 |
| Powertrain NHTSA category: POWER TRAIN | 6 | 1 | 0 | 0 | 0 |
| SERVICE BRAKES,FORWARD COLLISION AVOIDANCE | 6 | 0 | 0 | 0 | 0 |
| Structure & Body NHTSA category: STRUCTURE | 5 | 2 | 0 | 3 | 3 |
| ELECTRICAL SYSTEM,SERVICE BRAKES | 4 | 0 | 0 | 0 | 0 |
| Service Brakes NHTSA category: SERVICE BRAKES, HYDRAULIC | 4 | 0 | 0 | 0 | 0 |
| Visibility & Wipers NHTSA category: VISIBILITY/WIPER | 4 | 0 | 0 | 0 | 0 |
| Air Bags NHTSA category: AIR BAGS | 3 | 3 | 0 | 1 | 0 |
| ELECTRICAL SYSTEM,ENGINE | 3 | 1 | 0 | 0 | 0 |
| Seats & Restraints NHTSA category: SEATS | 3 | 2 | 0 | 3 | 0 |
| UNKNOWN OR OTHER,SERVICE BRAKES | 3 | 0 | 0 | 0 | 0 |
| AIR BAGS,SEAT BELTS | 2 | 2 | 0 | 2 | 0 |
| ELECTRICAL SYSTEM,EXTERIOR LIGHTING | 2 | 0 | 0 | 0 | 0 |
| Engine NHTSA category: ENGINE | 2 | 0 | 0 | 0 | 0 |
| Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| HYBRID PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ELECTRICAL SYSTEM | 2 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| Tires NHTSA category: TIRES | 2 | 0 | 0 | 0 | 0 |
| Wheels & Hubs NHTSA category: WHEELS | 2 | 0 | 0 | 0 | 0 |
| AIR BAGS,SEATS | 1 | 1 | 0 | 1 | 0 |
| AIR BAGS,SERVICE BRAKES,ENGINE | 1 | 1 | 0 | 1 | 0 |
| ELECTRICAL SYSTEM,AIR BAGS,SERVICE BRAKES | 1 | 1 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,SERVICE BRAKES,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,STRUCTURE | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,STRUCTURE,SERVICE BRAKES | 1 | 1 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,ENGINE | 1 | 0 | 0 | 0 | 0 |
| HYBRID PROPULSION SYSTEM,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,SERVICE BRAKES,FUEL/PROPULSION SYSTEM | 1 | 1 | 0 | 2 | 0 |
| POWER TRAIN,VEHICLE SPEED CONTROL | 1 | 1 | 0 | 0 | 0 |
| POWER TRAIN,VEHICLE SPEED CONTROL,SERVICE BRAKES | 1 | 1 | 0 | 1 | 0 |
| SERVICE BRAKES,ENGINE | 1 | 0 | 0 | 0 | 0 |
| STEERING,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL | 1 | 1 | 0 | 1 | 0 |
| STEERING,SUSPENSION,VEHICLE SPEED CONTROL | 1 | 1 | 0 | 0 | 0 |
| STEERING,SUSPENSION,WHEELS | 1 | 1 | 0 | 0 | 0 |
| STRUCTURE,WHEELS,ENGINE | 1 | 0 | 0 | 0 | 0 |
| SUSPENSION,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL | 1 | 1 | 0 | 1 | 0 |
| UNKNOWN OR OTHER,ELECTRONIC STABILITY CONTROL (ESC) | 1 | 0 | 0 | 0 | 0 |
| UNKNOWN OR OTHER,ENGINE,BACK OVER PREVENTION | 1 | 1 | 0 | 0 | 0 |
| VEHICLE SPEED CONTROL,SERVICE BRAKES | 1 | 1 | 0 | 0 | 0 |
| Visibility / Glass NHTSA category: VISIBILITY | 1 | 0 | 0 | 0 | 0 |
Cross-reference safety recalls, crash test safety ratings, and EPA fuel economy for this model year
Key performance indicators, EPA fuel economy specs, powertrain variants, and summary ratings.
Official recall campaigns, safety defect descriptions, and manufacturer free remedy instructions.
NHTSA 5-Star NCAP crash test results, driver assistance systems, and rollover resistance ratings.
EPA fuel economy ratings, electric range, and annual energy cost benchmarks.
Direct, deterministic answers synthesized from verified United States government databases for the 2015 Toyota Prius
In official NHTSA consumer records, the most frequently cited issue area for the 2015 Toyota Prius is Brakes & Traction Control, appearing in 94 records (52.2% of submitted filings).
Secondary reported categories include Electrical System (32) and Driver Assistance & Safety Tech (14).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 180 consumer defect complaints and 2 safety recall campaigns for the 2015 Toyota Prius.
Reviewing documented component complaint distributions, recall remedy notices, and active federal investigations provides an objective, evidence-based view of the vehicle's historical safety and defect record.
Among consumer complaint records on file with NHTSA for the 2015 Toyota Prius, 31 filings cite a crash, 1 cite smoke or fire, and 13 report one or more injuries.
Incident entries represent consumer descriptions at the time of submission to federal authorities and do not establish mechanical causation or legal liability.
NHTSA ODI records list 3 formal defect investigations involving the 2015 Toyota Prius (1 currently open).
Federal defect investigations are formal engineering evaluations opened when safety defect trends emerge, and do not by themselves establish a confirmed defect or mandatory recall.
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database under 49 CFR Part 576.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.