Classic car valuation API
Old Cars Data helps valuation tools and appraisal workflows find comparable collector-car sales, live auction signals, bid history, and market statistics through REST and MCP.
Queryable signals
What a valuation workflow can query
Recent completed sales for a normalized make and model.
Year ranges and price ranges for comparable-sale narrowing.
Auction status, including sold, bid to, reserve not met, canceled, and withdrawn outcomes.
Live auction listings for supported sources when a current market read is needed.
Bid trails that show demand intensity, price movement, and late-auction behavior.
Price statistics including median, average, ranges, sell-through, and trend signals where available.
Recommended flow
A valuation request, step by step
Normalize the vehicle first, then layer in comparable sales, live signals, demand, and pricing context.
- 01Normalize the vehicleGET /makes, GET /models, list_makes, list_modelsUse canonical make and model names before searching
- 02Find comparable salesGET /auctions or search_auctionsPull recent completed auction records and vehicle details
- 03Check current marketGET /auctions/live or search_live_auctionsCompare current live activity with completed sales
- 04Inspect demandGET /auction-bids or get_auction_bidsReview bid count and bid progression when available
- 05Summarize pricingGET /stats or get_price_statsUse statistics as context, not as a blind appraisal
Important limits
Data layer, not a blind appraisal
Collector-car values are sensitive to condition, provenance, originality, configuration, documentation, location, title history, and photos.
Old Cars Data provides the market data layer; appraisal decisions should combine the data with human inspection and domain judgment.
Reference notes
Frequently asked questions.
An API can support valuation by returning comparable auction results, live listings, and market statistics. Final valuations should still account for condition, originality, provenance, location, mileage, title status, and human review.
Try it
See the data on a live model page
Browse a worked example with market stats, recent auctions, and a value estimator for the Acura NSX.