One VIN at a time is fine for one car. For a 400-car run list it is a lost afternoon — and the reports end up as 400 PDFs nobody can sort.
Vehicle history reports are built for looking at one car. You paste a VIN, you read a page, you make a call. That model falls apart the moment you are appraising a whole run list or reconciling a hundred-car inventory, because the thing you actually want — accident count, title brand, owner count, odometer rollback flag, service gaps — is buried in prose across a hundred separate documents.
What this service does is turn that into a table. One row per VIN, one column per fact you care about, sortable, filterable, and joinable against your auction data or your inventory feed.
Through your own dealer account. Carfax and AutoCheck both sell dealer subscriptions with report allowances, and if you hold one, the automation drives that session the same way your team would — it just does it four hundred times without stopping for lunch, and it parses each result instead of filing a PDF.
Where you hold an official data agreement, the build uses the API instead of the browser, which is faster, cleaner and does not break when a page is redesigned. If you have an enterprise or API-tier arrangement with either provider, say so up front and the build changes shape accordingly.
A surprising amount of what dealers pay for is available at no cost and no licensing risk, and a good pipeline pulls it first so paid report credits get spent only where they add something.
A single sheet or database table where each row is a VIN and each column is a decision input: accident count and severity, title brand, number of owners, reported odometer readings with a rollback flag, service record density, use type — personal, fleet, rental, lease — and open recalls.
Because it is structured, it becomes filterable in ways a PDF never is. Show me every car in this run list with a clean title, one owner, no accidents and no open recall. That query takes a second instead of an afternoon, and it is the same query every day.
Carfax and AutoCheck licence their data; their terms restrict redistribution, and I will not build something that republishes their reports to third parties or resells report access you have not paid for. That is not caution for its own sake — it is the difference between a system you can run for years and one that gets your dealer account terminated.
What is squarely fine: automating your own licensed account for your own inventory, decoding VINs against public government data, and structuring the results for your own internal use. That covers what almost every dealer actually wants. If your use case is outside it, I will tell you before you pay, not after.
Carfax (your account), AutoCheck (your account), NHTSA vPIC, NHTSA recalls, NMVTIS providers, Window sticker lookups
Python, Requests, Playwright, Pandas, PDF parsing, REST APIs, PostgreSQL
No. Carfax licences its data and its terms prohibit redistribution — a system built on someone else's access gets shut down and takes the account with it. What I automate is your own dealer subscription, which is exactly what most dealers need and is entirely within their agreement.
A decode tells you what the car is — make, model, year, trim, engine, plant — and comes free from NHTSA's vPIC database with no licensing at all. A history report tells you what happened to the car: accidents, title brands, owners, odometer readings. Most builds use free decoding for everything and spend paid report credits only where a decision depends on history.
Decoding runs to tens of thousands per day with no practical ceiling. Paid report retrieval is capped by whatever your subscription allows, not by the software — the automation is built to respect that limit and to prioritise which VINs are worth a credit.
That is the usual reason people ask for it. History data joins onto the auction pipeline on VIN, so the morning deal email arrives with accident count and title status already on each row — and cars with a branded title never make the list in the first place.
Yes, and the same rules apply — your own account, your own inventory. Some dealers run both and reconcile them, which is straightforward once each report is parsed into the same set of columns.