Turn Messy Vehicle Data into Trusted Listings
CarGenius validates, standardises and explains supplier vehicle data before it reaches your marketplace, auction platform or pricing engine.
Detect wrong fuel types, inconsistent gearbox values, missing power data and suspicious specification mismatches — then publish cleaner listings with a shareable Vehicle Data Certificate.
Why vehicle data quality matters
Supplier feeds are rarely perfect. Different languages, missing fields, inconsistent naming and wrong technical values create listing errors, bad search results and incorrect price calculations.
Messy supplier feeds
The same car can arrive with fuel, gearbox, model and power values written in different formats, languages or abbreviations.
Errors become business risk
Wrong specifications can affect search filters, buyer trust, valuation, auction visibility and internal reporting.
CarGenius standardises it
The API returns clean structured values, confidence scores and comments that can be stored directly in your database.
What the API validates
Use it during imports, before publishing listings, or as a quality-control layer in your back-office.
Make & model
Normalises brand and model names and helps detect values that do not match your internal list.
Fuel type
Maps supplier values into standard fuel types such as Petrol, Diesel, Electric, Hybrid and others.
Gearbox
Standardises gearbox values and flags unclear or conflicting automatic / manual descriptions.
Technical values
Checks values such as power, engine size, battery capacity and other key attributes where available.
How it works
One API call can transform a raw supplier payload into clean data, validation metadata and a certificate link.
1 · Send raw data
POST a supplier payload — brand, model, VIN, fuel, gearbox, power and any other available fields.
2 · Validate & standardise
The engine normalises values, compares them with known mappings and returns confidence with a readable explanation.
3 · Store JSON or show certificate
Use the structured JSON in your system and optionally show a public Vehicle Data Certificate to buyers.
API at a glance
Clean vehicle data in one request.
Key facts
-
Auth:
?key=YOUR_API_KEY -
Base URL:
https://api.cargenius.info - Latency: designed for fast import workflows
- Cache: repeated payloads can be reused for predictable cost
Main methods
POST /validate– single vehicle payloadPOST /validateBulk– validate multiple vehicles
Need a full auction platform or white-label setup? See our business opportunities.
# Validate a single vehicle description
curl -X POST https://api.cargenius.info/validate \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"brand_original": "FORD",
"model_original": "Focus 1.0 EcoBoost",
"fuel_original": "bleifrei",
"gearbox_original": "Manual",
"power_kw": "74",
"cylinder_volume": "999"
}'{
"brand": "Ford",
"model": "Focus",
"fuel": "Petrol",
"gearbox": "Manual",
"power_kw": "74",
"cylinder_volume": "999",
"confidence": 93,
"comment": "EcoBoost 1.0 – petrol.",
"certificate_url": "https://cargenius.info/certificate/..."
}Vehicle Data Certificate
A successful validation can generate a shareable digital certificate — useful when you want to show buyers that listing data was checked and standardised.
- Public certificate URL for each validated listing.
- Shows standardised values and confidence information.
- Can be used as a buyer-facing transparency layer.
- Suitable for multi-language automotive platforms.
- Can be linked from dealer websites, auction pages or internal tools.
Where it fits
The API can be used wherever raw vehicle data enters your system.
Marketplaces
Normalise supplier feeds before publishing listings and improve filtering, search and buyer trust.
Auction platforms
Validate cars before they become visible in auctions and reduce manual correction work in the back-office.
Fleet remarketing
Clean end-of-lease vehicle data in bulk before exporting to sales channels or auction systems.
Pricing engines
Feed valuation models with consistent vehicle attributes and fewer noisy edge cases.
Vehicle history services
Cross-check seller claims, detect suspicious spec mismatches and enrich reports automatically.
Internal data quality teams
Build a consistent quality-control workflow for imported cars, supplier feeds and listing approvals.
Commercial options
The setup depends on your volume, use case and whether you only need the API or the full CarGenius platform.
Validation API
For companies that already have their own platform and need a clean data-quality layer.
- ✓ Pay by volume or fixed package
- ✓ Single and bulk validation
- ✓ Optional certificate generation
Built into CarGenius
For clients using the CarGenius auction platform, validation can become part of the import and publishing flow.
- ✓ Supplier import checks
- ✓ Back-office quality status
- ✓ Cleaner listings before publication
Enterprise workflow
For high-volume feeds, special supplier mappings, custom data rules or integration with existing internal systems.
- ✓ Custom mappings and rules
- ✓ Higher throughput
- ✓ Dedicated support and reporting
We’ll suggest the right model after understanding your data sources, expected volume and integration needs.
Frequently asked questions
Ready to clean up your vehicle data?
Tell us about your data sources, volume and current workflow — we’ll suggest the best API or platform setup.
Talk to our team