For Car Shopper

Used Car Health Check

Check a used car by VIN before you buy

Vet a used car in seconds before you buy.

Example query

Ask Claude or ChatGPT in plain English:

I'm thinking of buying VIN 4T3R6RFV7MU015349, listed at $36,903. Vet it for me. I'm shopping in 60601.

Is VIN 5YFB4MDE8RP121789 a good buy at $19,999?

Your assistant picks up the report, runs it against live MarketCheck data, and narrates the result back to you. Same credit balance, either assistant.

See a real rendered sample below

01What you get

You get back

  • Full spec sheet
  • Listing history
  • Price changes over time
  • Status changes
  • Hidden red flags

02Sample

What Claude/ChatGPT renders back

The interactive report your assistant shows right in the chat, the same view Claude and ChatGPT render, plus a shareable hosted link. Built on live MarketCheck data.

You

I'm thinking of buying VIN 4T3R6RFV7MU015349, listed at $36,903. Vet it for me. I'm shopping in 60601.

Claude

via MarketCheck data

Each run also returns a shareable hosted link to this exact report.

03Try one of these

Tap to open in Claude or ChatGPT

I'm thinking of buying VIN 4T3R6RFV7MU015349, listed at $36,903. Vet it for me. I'm shopping in 60601.
Is VIN 5YFB4MDE8RP121789 a good buy at $19,999?

04Who uses it

Who runs the Used Car Health Check

  • Shoppers who found one car and want to know if the asking price and the history hold up.
  • Buyers comparing a couple of finalists before the test drive.
  • Anyone who wants the listing history a dealer would rather not show.

05Questions

Before you run it

What does the report check?
The full spec sheet, the listing history (how long it has been for sale and where), every price change, dealer churn, mileage progression across listings, and computed red flags. It ends in a green, yellow or red verdict, and frames the asking price against market value when you give it.
Is this a title or accident history report?
No. It is built from MarketCheck’s listing history, not from title or insurance records. It tells you how the car has been marketed and priced. Pair it with a title history report if you need accident or title-brand records.
What do I need?
The VIN. Add the asking price and your ZIP to see asking versus market value, and the odometer if the listing shows a stale reading.
What do I do next if it looks good?
Run the Pre-Purchase Negotiation Brief on the same VIN for a target offer, a walk-away price and a script built on the cheaper comparables nearby.
What does it cost?
$1.49 per VIN. Connect the MarketCheck AI Desk to Claude or ChatGPT once and ask in plain English, or run it from this website. You pay per report from a credit balance, with no subscription. You can also buy a single report as a guest.

Technical reference (inputs, outputs, the MCP tool name): Used Car Health Check documentation.

06Related

Reports that pair with this one

Ready when you are

One click. Your assistant does the rest.