> ## Documentation Index > Fetch the complete documentation index at: https://docs.tight.com/llms.txt > Use this file to discover all available pages before exploring further. # Save cars > Save new (or update existing) cars ## OpenAPI ````yaml https://dev.tight.com/v3/api-docs post /v6/mileage/cars openapi: 3.0.1 info: title: Tight API contact: name: Hurdlr, Inc. (dba Tight) url: https://www.tight.com email: api@tight.com version: 6.0.0 servers: - url: https://sandbox.tight.com description: Staging Environment - url: https://prod.tight.com description: Production Environment security: - EmbedToken: [] paths: /v6/mileage/cars: post: tags: - Mileage Cars summary: Save cars description: Save new (or update existing) cars operationId: postCars requestBody: content: application/json: schema: $ref: '#/components/schemas/MultiParamCarPostDto' required: true responses: '200': description: Success content: application/json: schema: $ref: '#/components/schemas/ResponseListMultiResponseCarGetDto' '207': description: Some cars failed to save. See response body for error details. content: application/json: schema: $ref: '#/components/schemas/ResponseListMultiResponseCarGetDto' '400': description: All cars failed to save. content: application/json: schema: $ref: '#/components/schemas/ResponseListMultiResponseCarGetDto' '401': description: Not authenticated content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: result: FAILURE error: - type: INVALID_TOKEN message: Invalid access token '403': description: Not authorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: result: FAILURE error: - type: FORBIDDEN message: Expired access token '404': description: Endpoint not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: result: FAILURE error: - type: BAD_REQUEST message: Resource not found '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: result: FAILURE error: - type: UNKNOWN_ERROR message: Something went wrong. Please try again later. security: - EmbedToken: [] components: schemas: MultiParamCarPostDto: required: - data type: object properties: data: type: array items: $ref: '#/components/schemas/CarPostDto' ResponseListMultiResponseCarGetDto: type: object properties: result: type: string description: The result of the action performed. enum: - SUCCESS - FAILURE data: type: array description: The data generated by the action performed. items: $ref: '#/components/schemas/MultiResponseCarGetDto' error: type: array items: $ref: '#/components/schemas/ErrorItem' ErrorResponse: type: object properties: result: type: string description: The result of the action performed. enum: - SUCCESS - FAILURE data: type: object description: The data generated by the action performed. nullable: true error: type: array items: $ref: '#/components/schemas/ErrorItem' CarPostDto: type: object properties: id: type: string description: Id of the car, required when updating an existing car example: car_28868401 make: type: string description: Make of the car nullable: false example: Toyota model: type: string description: Model of the car nullable: false example: Camry name: type: string description: Name of the car nullable: false example: My Toyota Camry year: type: integer description: Year of the car's make format: int32 nullable: false example: 2022 isPrimary: type: boolean description: Whether this car is the user's primary car nullable: false example: true status: type: string description: Status of the car nullable: false example: ACTIVE enum: - ACTIVE - INACTIVE - REMOVED details: type: array nullable: true items: type: object properties: year: type: integer description: Year associated with this detail format: int32 example: 2024 odometer: type: integer description: >- Odometer reading from the beginning of the year associated with this detail format: int32 example: 12500 customData: $ref: '#/components/schemas/JsonNode' MultiResponseCarGetDto: type: object properties: result: type: string description: The result of the action performed. enum: - SUCCESS - FAILURE statusCode: $ref: '#/components/schemas/HttpStatus' data: $ref: '#/components/schemas/CarGetDto' error: type: array items: $ref: '#/components/schemas/ErrorItem' description: The data generated by the action performed. ErrorItem: type: object properties: type: type: string description: The type of the error. Safe for programmatic use. enum: - UNKNOWN_ERROR - INVALID_TOKEN - EXPIRED_TOKEN - FORBIDDEN - BAD_REQUEST - JSON_ERROR - DUPLICATE - REQUIRED - INVALID_VALUE - NOT_MODIFIABLE - INVALID_FORMAT - NOT_FOUND message: type: string description: >- A human-readable message providing more details about the error. Safe for displaying to a user. param: type: string description: >- If the error is parameter-specific, the parameter related to the error. This can be used to display a message near the correct form field. description: Errors associated with the action performed, if applicable. JsonNode: type: object properties: empty: type: boolean array: type: boolean 'null': type: boolean object: type: boolean float: type: boolean string: type: boolean number: type: boolean missingNode: type: boolean valueNode: type: boolean nodeType: type: string enum: - ARRAY - BINARY - BOOLEAN - MISSING - 'NULL' - NUMBER - OBJECT - POJO - STRING pojo: type: boolean integralNumber: type: boolean floatingPointNumber: type: boolean short: type: boolean int: type: boolean long: type: boolean double: type: boolean bigDecimal: type: boolean bigInteger: type: boolean textual: type: boolean deprecated: true boolean: type: boolean binary: type: boolean container: type: boolean embeddedValue: type: boolean description: >- Custom JSON in which you can store any data with max length of 2000 characters nullable: true example: internal_key: some_internal_key some_other_field: 23434 HttpStatus: type: integer description: The HTTP status code for the action performed. format: int32 enum: - 200 - 400 - 401 - 403 - 404 - 500 CarGetDto: required: - details - id - isPrimary - make - model - name - status - year type: object properties: id: type: string description: Id of the car example: car_28868401 make: type: string description: Make of the car nullable: true example: Toyota model: type: string description: Model of the car nullable: true example: Camry name: type: string description: Name of the car nullable: true example: My Toyota Camry year: type: integer description: Year of the car's make format: int32 nullable: true example: 2022 isPrimary: type: boolean description: Whether this car is the user's primary car example: true status: type: string description: Status of the car example: ACTIVE enum: - ACTIVE - INACTIVE - REMOVED details: type: array items: $ref: '#/components/schemas/CarDetailGetDto' customData: $ref: '#/components/schemas/JsonNode' description: The data generated by the action performed. CarDetailGetDto: required: - odometer - year type: object properties: year: type: integer description: Year associated with this detail format: int32 example: 2024 odometer: type: integer description: >- Odometer reading from the beginning of the year associated with this detail format: int32 example: 12500 description: Yearly detail entries for this car nullable: true securitySchemes: EmbedToken: type: http description: >- Bearer authentication header of the form `Bearer `, see [Authentication for more detail](/api-reference/authentication#partner-level-authentication). scheme: bearer ````