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Total NHTSA Complaints
10
Owner filings recorded
#1 Reported Problem
Electrical System
4 reports (40%)
Crash Incident Reports
4
Filings citing a crash
Fire & Injury Reports
1
0 fire • 1 injury filings
Defect Investigation Analysis

Executive Problem Findings

AutoUtility currently tracks 10 official NHTSA owner defect complaints for the 2021 Toyota Prius Prime. Electrical System issues are the most frequently reported category, appearing in 4 complaints (40% of submitted records). Among these NHTSA complaint records, 4 filings cite a crash, 1 reports one or more injuries.

Methodology Notice: Consumer complaints are unverified voluntary submissions to the NHTSA Office of Defects Investigation (ODI). Filings are not normalized for sales volume or vehicle mileage and do not constitute an audited component failure rate.
Incident & Severity Profile
  • • Total Owner Reports: 10 complaints submitted under federal penalty.
  • • Primary Subsystem: Electrical System accounts for 40% of submissions (4 reports).
  • • Secondary Systems: Brakes & Traction Control (3), Driver Assistance & Safety Tech (3).
  • • Crash Incidents: 4 filings cite an impact or collision.
  • • Thermal Incidents: 0 filings cite smoke or fire.
  • • Reported Casualties: 1 injury filings • 0 fatality filings.
Category Distribution

Reported Defect Categories for 2021 Toyota Prius Prime

Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records

Electrical System
4
40%
Brakes & Traction Control
3
30%
Driver Assistance & Safety Tech
3
30%
Fuel & Propulsion System
2
20%
Powertrain & Transmission
2
20%
#1 40% SHARE

Electrical System

4 owner complaints submitted to NHTSA ODI for this subsystem.

⚠️ 1 Crash 🩹 2 Injury
#2 30% SHARE

Brakes & Traction Control

3 owner complaints submitted to NHTSA ODI for this subsystem.

⚠️ 2 Crash 🩹 2 Injury
#3 30% SHARE

Driver Assistance & Safety Tech

3 owner complaints submitted to NHTSA ODI for this subsystem.

⚠️ 1 Crash
#4 20% SHARE

Fuel & Propulsion System

2 owner complaints submitted to NHTSA ODI for this subsystem.

⚠️ 1 Crash 🩹 2 Injury
Federal Oversight

Official NHTSA Defect Investigations (1)

Formal engineering analyses and preliminary evaluations opened by the NHTSA Office of Defects Investigation

ODI Action #DP22005 CLOSED Defect Petition (DP)
Opened: 2023-01-27 • Closed: 2023-08-07
Subject / Subsystem
Pedestrian alert sounds
Affected Component
ELECTRICAL SYSTEM:PROPULSION SYSTEM
Recall Linkage
NHTSA 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 NHTSA.gov 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, NHTSA 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 NHTSA 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 NHTSA regarding the subject matter of the petition.
Consumer Filings

Recent NHTSA Owner Reports for 2021 Toyota Prius Prime

Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation

Electrical System ODI #11723068
Filed: 03/09/2026
Defect Report

"Odometer Fraud. The contact purchased a 2021 Toyota Prius Prime. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of the purchase, the vehicle mileage was 73,000. It was later discovered upon checking the vehicle history..."

Brakes & Traction Control ODI #11696251
Filed: 10/29/2025
⚠️ Crash Cited 🩹 2 Injuries

"I was slowly entering a handicapped parking place right in front of a business. The distance from the front of the parking space to the building wall was about 15 feet, one car length. I approached the place to stop in the parking spot when in a split second the car violently surged forward and..."

Driver Assistance & Safety Tech ODI #11688961
Filed: 09/22/2025
Defect Report

"The contact owns a 2021 Toyota Prius Prime. The contact stated that while shifted into reverse(R), the rearview camera intermittently went black. No warning light was illuminated. In addition, the contact stated that while driving at various speeds, the rearview camera intermittently went black...."

Powertrain & Transmission ODI #11651621
Filed: 03/30/2025
Defect Report

"Rodents accessed and damaged the car because there essentials components are not protected."

Driver Assistance & Safety Tech ODI #11620914
Filed: 10/20/2024
⚠️ Crash Cited

"My vehicle is equipped with Toyota Safety Sense, which includes Full-Speed Range Dynamic Radar Cruise Control (DRCC) and a Pre-Collision System. Today, while driving with DRCC engaged, my vehicle followed a leading car and appropriately slowed down to 2 mph as we approached a signalized..."

Multi-Year Trend

Complaint History for Toyota Prius Prime

Reported defect complaint volume across sibling model years (2017–2024)

Model Year NHTSA Complaints Crash Reports Safety Recalls Detailed Report
2017 Toyota Prius Prime 143 20 0 View 2017 Problems →
2018 Toyota Prius Prime 15 4 0 View 2018 Problems →
2019 Toyota Prius Prime 8 0 1 View 2019 Problems →
2020 Toyota Prius Prime 16 5 1 View 2020 Problems →
2021 Toyota Prius Prime Current Page 10 4 0 Current
2022 Toyota Prius Prime 8 3 1 View 2022 Problems →
2023 Toyota Prius Prime 5 0 4 View 2023 Problems →
2024 Toyota Prius Prime 11 1 4 View 2024 Problems →
Exhaustive System Audit

Detailed NHTSA Component Breakdown for 2021 Toyota Prius Prime

Complete distribution of consumer defect reports across all 10 granular NHTSA system and subsystem classifications

Vehicle Component / System Total Complaints Crash Reports Fire Reports Injury Entries Fatality Entries
AIR BAGS,SERVICE BRAKES,ENGINE 1 1 0 0 0
Back Over Prevention / Camera NHTSA category: BACK OVER PREVENTION 1 0 0 0 0
Electrical System NHTSA category: ELECTRICAL SYSTEM 1 0 0 0 0
ELECTRICAL SYSTEM,SERVICE BRAKES,FUEL/PROPULSION SYSTEM 1 1 0 2 0
Forward Collision Avoidance NHTSA category: FORWARD COLLISION AVOIDANCE 1 1 0 0 0
POWER TRAIN,ELECTRICAL SYSTEM 1 0 0 0 0
POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM 1 0 0 0 0
SERVICE BRAKES, HYDRAULIC,VEHICLE SPEED CONTROL 1 0 0 0 0
Other / Uncategorized NHTSA category: UNKNOWN OR OTHER 1 1 0 0 0
Visibility & Wipers NHTSA category: VISIBILITY/WIPER 1 0 0 0 0
Search Intelligence

Quick Answers: Common Problems & Reliability Questions for the 2021 Toyota Prius Prime

Direct, deterministic answers synthesized from verified United States government databases for the 2021 Toyota Prius Prime

What are the most common reported problems with the 2021 Toyota Prius Prime?

In official NHTSA consumer records, the most frequently cited issue area for the 2021 Toyota Prius Prime is Electrical System, appearing in 4 records (40% of submitted filings).

Secondary reported categories include Brakes & Traction Control (3) and Driver Assistance & Safety Tech (3).

Source: NHTSA Office of Defects Investigation (ODI)

Is the 2021 Toyota Prius Prime a reliable vehicle?

AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 10 consumer defect complaints and 0 safety recall campaigns for the 2021 Toyota Prius Prime.

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.

Source: NHTSA ODI & Safety Recalls Databases

Are there crash, fire, or injury reports associated with the 2021 Toyota Prius Prime?

Among consumer complaint records on file with NHTSA for the 2021 Toyota Prius Prime, 4 filings cite a crash, 0 cite smoke or fire, and 1 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.

Source: NHTSA Office of Defects Investigation Consumer Logs

Has NHTSA formally investigated defects on the 2021 Toyota Prius Prime?

NHTSA ODI records list 1 formal defect investigation involving the 2021 Toyota Prius Prime (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.

Source: NHTSA Office of Defects Investigation Registry
Official US Government Data Provenance

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.