What Carfax does with your VIN
Carfax takes a vehicle identification number (VIN) and searches its database for records tied to that specific car. When you enter a VIN on Carfax.com, the service returns a report showing accident history, title records, odometer readings, service records from participating shops, and ownership changes. The report pulls from insurance claims, police reports, DMV records, and repair facilities — not from the car itself.
A Carfax report does not tell you whether the car runs, whether the engine is sound, or whether the seller is honest. It tells you what third parties have already recorded about that car's past. If a fender was repaired at a body shop that does not report to Carfax, that damage will not appear. If an accident was never reported to insurance, it will not show up either.
Key Takeaways
- You enter the VIN on Carfax.com and pay a one-time fee per report, or buy a multi-report package if you are shopping for multiple cars.
- The report shows accident history, title problems, odometer readings, and service records from shops that report to Carfax, but only if those events were recorded.
- Carfax reports are most useful for spotting title issues and major accidents, but a pre-purchase inspection by a mechanic catches problems Carfax cannot.
- You can also request a vehicle history report from AutoCheck or the National Motor Vehicle Title Information System (NMVTIS) as a second opinion.
How to order a Carfax report
Go to Carfax.com and look for the search box on the homepage. Enter the VIN — a 17-character code found on the driver's side dashboard, the door jamb, or the title document. Carfax will pull up a preview showing whether the car has a branded title (salvage, flood, lemon law buyback) or major accidents. The preview is free.
To see the full report, you will need to pay. A single report costs around $30 to $35, though the exact price varies. Carfax also sells packages: typically three reports for around $40 to $50, or unlimited reports for a month at a higher price. Choose the option that matches how many cars you plan to check. Enter your payment information and you will receive the full report when ready, either on screen or as a PDF you can read and save.
What information appears in a full Carfax report
The report is organized into sections. The first shows the car's basic details: year, make, model, body type, and engine size. Below that is the ownership history — how many previous owners, whether they were personal or commercial, and the states where the car was registered.
The accident and damage section lists any reported collisions, the severity (minor, moderate, severe), and whether airbags deployed. Title information shows whether the title is clean, branded (salvage, flood, lemon law), or has a lien. The service records section displays maintenance and repairs logged by shops that report to Carfax — oil changes, brake work, transmission service, and so on. The odometer readings section tracks mileage over time and flags inconsistencies, such as a reading that goes backward.
At the bottom, Carfax assigns a score based on the report data. A higher score suggests fewer red flags, but the score is not a may provide of condition. Use it as one data point, not the final word.
What a Carfax report does not show
Carfax has gaps. If a previous owner paid cash for repairs and never filed an insurance claim, those repairs will not appear. If a body shop does not report to Carfax, minor accidents and cosmetic work stay hidden. If the odometer was rolled back before Carfax started tracking that car, the report will not catch it. If a car was flooded but the owner never reported it to insurance, Carfax will not know.
A clean Carfax report does not mean the car is in good condition. It means no major events were recorded in Carfax's database. The engine could be failing, the transmission could be slipping, the interior could be falling apart — and Carfax would show nothing. That is why a pre-purchase inspection by a trusted mechanic is essential. The mechanic can spot mechanical problems, rust, frame damage, and wear that no history report can reveal.
When to order a Carfax report
Order a report as soon as you find a car you are seriously considering. Do not wait until you are ready to make an offer. A report takes seconds to receive, and it can reveal a title problem or major accident history that makes the car not worth your time. If the report shows red flags, you can walk away before investing in a mechanic's inspection.
If the report is clean or shows only minor issues, move forward with a pre-purchase inspection. Schedule the inspection with a mechanic of your choice — not one recommended by the seller — and have them put the car on a lift. This is where you find rust, frame damage, transmission problems, and engine issues that Carfax cannot detect.
Other vehicle history sources to consider
Carfax is the largest vehicle history database, but it is not the only one. AutoCheck is a competitor that pulls from different sources and sometimes catches accidents or title issues that Carfax misses. A single AutoCheck report costs less than Carfax — usually around $25 — and some dealerships include it free with their listings.
The National Motor Vehicle Title Information System (NMVTIS) is a government database run by the Department of Justice. It focuses on title and branding information and is free to search. You can access NMVTIS through authorized providers listed on the official website. If you want the most complete picture, order a Carfax report, check AutoCheck, and search NMVTIS. If the reports disagree on title status or accident history, that disagreement itself is a red flag worth investigating with the seller or a lawyer before you buy.
Frequently Asked Questions
Can I get a free Carfax report?
The preview is free and shows whether the car has a branded title or major accidents. The full report requires payment. Some dealerships and used car websites include a free Carfax report with their listings, so check there first before paying out of pocket.
What does a branded title mean on a Carfax report?
A branded title means the car has been declared a total loss by an insurance company, flooded, deemed a lemon law buyback, or salvaged. A branded title car is legal to own and drive in most states, but it is worth significantly less and can be harder to insure or resell. If you see a branded title, ask the seller for documentation of the original damage and any repairs made.
Should I trust a Carfax report more than a mechanic's inspection?
No. A Carfax report shows recorded history; a mechanic's inspection shows the car's actual condition. A car can have a clean Carfax and still need thousands in repairs. Always get both before you buy.
What if the Carfax report shows an accident but the seller says it never happened?
Ask the seller for documentation — repair estimates, insurance paperwork, or body shop invoices. If they cannot provide proof the accident did not occur, treat the Carfax report as accurate. You can also ask a mechanic to inspect the area in question for signs of past damage or repair.
Can I check a VIN for free anywhere else?
The NMVTIS database is free and shows title and branding information. Some dealerships and classified sites offer free Carfax or AutoCheck reports as a selling tool. Your state's DMV may also provide limited VIN information for a small fee, though the report is usually less detailed than Carfax.