Current and historic valuation data, including retail pricing for different types of dealer.
Key Features
VIN-based
VIN lookup for accurate identification
Highly Accurate
Based on hundreds of thousands of retail listings
Confidence-based
Upper and lower price bounds encompass 95% of retail observations
Sample Response
V1
Documentation
Introduction
Current and historic valuation data, including retail pricing for different types of dealer.
Header
When making calls to our API, include the following header:
x-api-key:your-api-key-here
Example Request
https://api.oneautoapi.com/percayso/currentvaluationfromvin/?vehicle_identification_number=ABCDE123456F78910¤t_mileage=12345&valuation_date=2025-10-05
Example Sandbox Request
https://sandbox.oneautoapi.com/percayso/currentvaluationfromvin/?vehicle_identification_number=ABCDE123456F78910¤t_mileage=12345&valuation_date=2025-10-05
Request Parameters
vehicle_identification_number
mandatory, string, e.g. ABCDE123456F78910
Vehicle identification number (VIN).
current_mileage
optional, string, e.g. 12345
Current mileage of the vehicle. If not provided the valuation will be based on an estimated mileage.
valuation_date
optional, string, e.g. 2025-10-05
Allows the user to specify the date for the current/initial valuation (e.g. a historic date).
Sample Response
{
"success": true,
"result": {
"manufacturer_desc": "land Rover",
"model_range_desc": "Discovery",
"list_price_inc_delivery_vat": 55280,
"days_to_sell": 39.5,
"current_mileage": 12345,
"is_current_mileage_estimated": false,
"retail_high_valuation": 18583,
"retail_average_valuation": 16538,
"retail_low_valuation": 13377,
"trade_valuation": 10220,
"retail_valuation_independent": 16185,
"retail_valuation_supermarket": 15826,
"gross_margin_gbp": 6318,
"gross_margin_percentage": 38,
"valuation_date": "2025-10-05"
},
"error": "If there is an error the message would go here"
}Response Parameters
success
e.g. true
Whether the api call was successful
manufacturer_desc
e.g. land Rover
Manufacturer description
model_range_desc
e.g. Discovery
Model range description.
list_price_inc_delivery_vat
e.g. 55280
The list price + delivery price including VAT
days_to_sell
e.g. 39.5
The expected number of days it will take to sell the vehicle.
current_mileage
e.g. 12345
Current mileage of the vehicle
is_current_mileage_estimated
e.g. false
The valuations returned are based on an estimated mileage.
retail_high_valuation
e.g. 18583
The suggested retail high valuation including VAT for the specified vehicle .
retail_average_valuation
e.g. 16538
The suggested retail average valuation including VAT for the specified vehicle.
retail_low_valuation
e.g. 13377
The suggested retail low valuation including VAT for the specified vehicle.
trade_valuation
e.g. 10220
The suggested market average trade valuation for the specified vehicle (location, market and condition adjusted).
retail_valuation_independent
e.g. 16185
Average retail value for an independent dealer.
retail_valuation_supermarket
e.g. 15826
Average retail value for a car supermarket.
gross_margin_gbp
e.g. 6318
The gross margin i.e. difference between retail and trade in GBP
gross_margin_percentage
e.g. 38
The gross margin as a % of retail.
valuation_date
e.g. 2025-10-05
Allows the user to specify the date for the current/initial valuation (e.g. a historic date)
error
e.g. If there is an error the message would go here
Details of what went wrong with the api call
Status Codes
200
success, chargeable
Request has been successfully received and a response has been sent.
202
accepted, non-chargeable
Request has been received and accepted for processing, but the action has not yet been completed.
204
no content, non-chargeable
Request has been successfully received but there is no content to return e.g. if an invalid VRM has been sent.
206
partial content, non-chargeable
Request has been successfully received but limited content is returned e.g. if an invalid VRM has been sent.
400
bad request, non-chargeable
Request was not received e.g. if any required parameters are missing.
403
forbidden, non-chargeable
Request was rejected e.g. if the API key is invalid or the service is not enabled.
429
too many requests, non-chargeable
API key rate limit/quota has been exceeded.
500
internal server error, non-chargeable
We are unable to process the request e.g. if the API is under extremely heavy load.
503
service unavailable, non-chargeable
Service is temporarily unavailable. Contact help@oneautoapi.com