(PowerShell) DVLA Vehicle Enquiry Service

Demonstrates how to make a call to the DVLA Vehicle Enquiry API to get vehicle details of a specified vehicle. It uses the vehicle registration number as input to search and provide details of the vehicle.

For more information, see https://developer-portal.driver-vehicle-licensing.api.gov.uk/apis/vehicle-enquiry-service/vehicle-enquiry-service-description.html

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = New-Object Chilkat.Http

# Implements the following CURL command:

# curl -X POST https://driver-vehicle-licensing.api.gov.uk/vehicle-enquiry/v1/vehicles \
#   -H "x-api-key: supplied API key" \
#   -H "Accept: application/json" \
#   -d '{"registrationNumber": "ABC1234"}'

# Use the following online tool to generate HTTP code from a CURL command
# Convert a cURL Command to HTTP Source Code

# Use this online tool to generate code from sample JSON:
# Generate Code to Create JSON

# The following JSON is sent in the request body.

# {
#   "registrationNumber": "ABC1234"
# }

$json = New-Object Chilkat.JsonObject
$json.UpdateString("registrationNumber","ABC1234")

$http.SetRequestHeader("Accept","application/json")
$http.SetRequestHeader("x-api-key","supplied API key")

$resp = $http.PostJson3("https://driver-vehicle-licensing.api.gov.uk/vehicle-enquiry/v1/vehicles","application/json",$json)
if ($http.LastMethodSuccess -eq $false) {
    $($http.LastErrorText)
    exit
}

$sbResponseBody = New-Object Chilkat.StringBuilder
$resp.GetBodySb($sbResponseBody)
$jResp = New-Object Chilkat.JsonObject
$jResp.LoadSb($sbResponseBody)
$jResp.EmitCompact = $false

$("Response Body:")
$($jResp.Emit())

$respStatusCode = $resp.StatusCode
$("Response Status Code = " + $respStatusCode)
if ($respStatusCode -ge 400) {
    $("Response Header:")
    $($resp.Header)
    $("Failed.")

    exit
}

# Sample JSON response:
# (Sample code for parsing the JSON response is shown below)

# {
#   "artEndDate": "2025-02-28",
#   "co2Emissions": 135,
#   "colour": "BLUE",
#   "engineCapacity": 2494,
#   "fuelType": "PETROL",
#   "make": "ROVER",
#   "markedForExport": false,
#   "monthOfFirstRegistration": "2004-12",
#   "motStatus": "No details held by DVLA",
#   "registrationNumber": "ABC1234",
#   "revenueWeight": 1640,
#   "taxDueDate": "2007-01-01",
#   "taxStatus": "Untaxed",
#   "typeApproval": "N1",
#   "wheelplan": "NON STANDARD",
#   "yearOfManufacture": 2004,
#   "euroStatus": "EURO 6 AD",
#   "realDrivingEmissions": "1",
#   "dateOfLastV5CIssued": "2016-12-25"
# }

# Sample code for parsing the JSON response...
# Use the following online tool to generate parsing code from sample JSON:
# Generate Parsing Code from JSON

$artEndDate = $jResp.StringOf("artEndDate")
$co2Emissions = $jResp.IntOf("co2Emissions")
$colour = $jResp.StringOf("colour")
$engineCapacity = $jResp.IntOf("engineCapacity")
$fuelType = $jResp.StringOf("fuelType")
$make = $jResp.StringOf("make")
$markedForExport = $jResp.BoolOf("markedForExport")
$monthOfFirstRegistration = $jResp.StringOf("monthOfFirstRegistration")
$motStatus = $jResp.StringOf("motStatus")
$registrationNumber = $jResp.StringOf("registrationNumber")
$revenueWeight = $jResp.IntOf("revenueWeight")
$taxDueDate = $jResp.StringOf("taxDueDate")
$taxStatus = $jResp.StringOf("taxStatus")
$typeApproval = $jResp.StringOf("typeApproval")
$wheelplan = $jResp.StringOf("wheelplan")
$yearOfManufacture = $jResp.IntOf("yearOfManufacture")
$euroStatus = $jResp.StringOf("euroStatus")
$realDrivingEmissions = $jResp.StringOf("realDrivingEmissions")
$dateOfLastV5CIssued = $jResp.StringOf("dateOfLastV5CIssued")