Department of Transportation


in support of Open Government Directive

NHTSA Datasets


NHTSA's Office of Defects Investigation (ODI) - Complaints

Complaint information entered into NHTSA-ODI's vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists. Complaint information is also analyzed to monitor existing recalls for proper scope and adequacy.

NHTSA is an organization under the U.S. Department of Transportation (DOT) whose mission is to save lives, prevent injuries and reduce economic costs due to road traffic crashes, through education, research, safety standards and enforcement activity. NHTSA is dedicated to achieving the highest standards of excellence in motor vehicle and highway safety.

Dataset Summary

Agency Department of Transportation
Sub-Agency/Organization National Highway Traffic Safety Administration
Category 23. Transportation
Date Released Dec 16 2002
Date Updated Jan 21 2021
Time Period 1949 to present
Frequency Daily

Dataset Information Data Category Type
Raw data
Specialized Data Category Designation Enforcement
Keywords Phone, Paper, Email
Unique ID 81

Contributing Agency Information

Agency Program Page
Agency Data Series Page

Dataset Coverage

Unit of Analysis
Vehicles , Tires, Child Safety Seats, Equipment
Granularity United States
Geographic Coverage N/A

Data Description

Collection Mode
Web, Phone
Data Collection Instrument N/A
Data Dictionary/Variable List

Dataset Quality

Data Quality Certification
Privacy and Confidentiality
Applicable Information Quality Guideline Designation
National Highway Traffic Safety Administration

Additional Dataset Documentation

Technical Documentation
Additional Metadata N/A


Request Specification


  • Color codes to understand each part of the request url:
    RED - Method Name
    BLUE - Type filter (if any)
    GREEN - applicable parameters
    BROWN - extended paramaters AND format of the response expected

  • Special Characters
          & - Replace character ampresand (&) value in the parameter with underscore (_)
          Space, Hyphens - Use these characters in the parameter values as is
  • Version - These APIs are at early stages with enhancements in plan. Check for updates often.
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