AutoUtility currently tracks 42 official NHTSA owner defect complaints for the 2018 Toyota Prius. Visibility, Wipers & Glass issues are the most frequently reported category, appearing in 7 complaints (16.7% of submitted records). Among these NHTSA complaint records, 6 filings cite a crash, 5 report one or more injuries.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
7 owner complaints submitted to NHTSA ODI for this subsystem.
5 owner complaints submitted to NHTSA ODI for this subsystem.
5 owner complaints submitted to NHTSA ODI for this subsystem.
5 owner complaints submitted to NHTSA ODI for this subsystem.
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
"The contact owns a 2018 Toyota Prius. The contact stated that while having a routine oil change, the contact was made aware that there was no coolant in the coolant reservoir. No warning lights were illuminated. The contact was constantly adding coolant to the coolant reservoir; however, the..."
"The contact owns a 2018 Toyota Prius. The contact stated that while driving at an undisclosed speed, the engine constantly overheated. An unidentified warning light was flashing on the instrument panel. An independent mechanic inspected the vehicle and became aware that the coolant reservoir was..."
"Both taillamps holding moisture. Could cause electrical issues or fire. .. same year and model car have same reported issues and were fixed by manufacturer. This vehicle is the same but different level."
"Driver door lock actuator not working. This seems to be a common problem for Toyota over the last decade, but they yet to put more vehicles to their recall list. Actuator just stopped working. I have to use key out of FOB to manually open. This is a safety issue if I’m trying to get in my car..."
"The contact owns a 2018 Toyota Prius. The contact stated the trunk opened at a slow speed and failed to remain open. The dealer was contacted and informed of the failure. The dealer informed the contact that the vehicle needed to be taken in to be inspected. The vehicle was not diagnosed or..."
Reported defect complaint volume across sibling model years (2015–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Toyota Prius | 180 | 31 | 2 | View 2015 Problems → |
| 2016 Toyota Prius | 181 | 13 | 5 | View 2016 Problems → |
| 2017 Toyota Prius | 93 | 14 | 3 | View 2017 Problems → |
| 2018 Toyota Prius Current Page | 42 | 6 | 3 | Current |
| 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 25 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 5 | 0 | 0 | 1 | 0 |
| Visibility & Wipers NHTSA category: VISIBILITY/WIPER | 5 | 0 | 0 | 1 | 0 |
| EXTERIOR LIGHTING | 4 | 0 | 0 | 0 | 0 |
| Air Bags NHTSA category: AIR BAGS | 3 | 1 | 0 | 1 | 0 |
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 3 | 0 | 0 | 0 | 0 |
| Engine & Cooling NHTSA category: ENGINE AND ENGINE COOLING | 2 | 0 | 0 | 0 | 0 |
| Seats & Restraints NHTSA category: SEATS | 2 | 1 | 0 | 1 | 0 |
| Engine NHTSA category: ENGINE | 1 | 0 | 0 | 0 | 0 |
| ENGINE AND ENGINE COOLING,ENGINE | 1 | 0 | 0 | 0 | 0 |
| EXTERIOR LIGHTING,VISIBILITY/WIPER | 1 | 0 | 0 | 0 | 0 |
| Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| Doors, Latches & Locks NHTSA category: LATCHES/LOCKS/LINKAGES | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE | 1 | 1 | 0 | 1 | 0 |
| POWER TRAIN,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| Service Brakes NHTSA category: SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
| SERVICE BRAKES, AIR,VEHICLE SPEED CONTROL,FORWARD COLLISION AVOIDANCE | 1 | 1 | 0 | 0 | 0 |
| STEERING,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| Structure & Body NHTSA category: STRUCTURE | 1 | 0 | 0 | 0 | 0 |
| STRUCTURE,SERVICE BRAKES | 1 | 1 | 0 | 0 | 0 |
| STRUCTURE,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| Vehicle Speed Control NHTSA category: VEHICLE SPEED CONTROL | 1 | 1 | 0 | 0 | 0 |
| VEHICLE SPEED CONTROL,SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
| Visibility / Glass NHTSA category: VISIBILITY | 1 | 0 | 0 | 0 | 0 |
| Wheels & Hubs NHTSA category: WHEELS | 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 2018 Toyota Prius
In official NHTSA consumer records, the most frequently cited issue area for the 2018 Toyota Prius is Visibility, Wipers & Glass, appearing in 7 records (16.7% of submitted filings).
Secondary reported categories include Engine & Cooling (5) and Exterior Lighting (5).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 42 consumer defect complaints and 3 safety recall campaigns for the 2018 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 2018 Toyota Prius, 6 filings cite a crash, 0 cite smoke or fire, and 5 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 1 formal defect investigation involving the 2018 Toyota Prius (all closed).
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.