What Carfax does with your VIN
Carfax is a private company that collects and sells vehicle history reports. When you give Carfax a VIN (Vehicle Identification Number), it searches its database for records tied to that specific car — things like accident reports, service records, title transfers, and odometer readings. The report shows you what Carfax has found, not what it hasn't found. A clean report means Carfax has no records of damage or problems, but it does not mean the car has never been in an accident or had hidden damage.
Carfax gets its information from insurance companies, police reports, auto auctions, service shops, and state DMV records. Not every accident or repair shows up, especially if the owner paid out of pocket or used an independent mechanic. The report is useful as one piece of information, not as a complete history.
Key Takeaways
- A Carfax report requires the 17-character VIN and costs money per report, though some dealers and websites offer free single reports.
- The report shows accidents, service records, title problems, and odometer readings that Carfax has found in its database, but does not may provide the car has no hidden damage.
- You can order a Carfax report directly from Carfax.com or through many used car listings, dealerships, and third-party sites.
- A Carfax report alone is not enough to decide whether to buy a car — combine it with a pre-purchase inspection by a mechanic and a title check through your state DMV.
Where to find the VIN on a car
The VIN is a 17-character code stamped into the car's frame and printed on documents. The easiest place to find it is on the dashboard on the driver's side, visible through the windshield from outside the car. You can also find it on the driver's door jamb, on the insurance card, on the vehicle registration, and on the title document.
If you are looking at a car for sale online or at a dealership, the VIN is usually listed in the ad or on the window sticker. Write it down exactly as it appears — Carfax will not find a report if even one character is wrong.
How to order a Carfax report
Go to Carfax.com and enter the VIN in the search box. Carfax will show you a preview of what the report contains and ask you to pay before you see the full details. A single report typically costs between $25 and $35, though prices vary. If you buy multiple reports at once, Carfax offers discounts.
Many used car websites — including Autotrader, Cars.com, and Edmunds — offer free Carfax reports on their listings. Some dealerships also provide a free Carfax report when you visit or express interest in a car. If you are buying from a private seller, you will usually need to pay for the report yourself.
Carfax also offers a subscription model if you plan to look at many cars. A monthly subscription gives you unlimited reports for a flat fee, which can save money if you are shopping actively.
What information appears in a Carfax report
A Carfax report includes accident and damage history, service and maintenance records, title information (whether the title is clean, salvaged, or branded), odometer readings from different points in time, and ownership history showing how many previous owners the car has had. It also notes whether the car was used as a rental, fleet vehicle, or taxi.
The report flags title problems like liens (money still owed on the car), salvage titles (the car was declared a total loss by an insurance company), and flood damage. These are critical pieces of information. A salvage title or active lien can make a car difficult or impossible to resell, and flood damage can cause electrical and mechanical problems that show up months later.
What a Carfax report does not tell you
Carfax reports have real limits. The report does not include maintenance done by the owner themselves, repairs paid for in cash at independent shops, or accidents that were never reported to police or insurance. A car with a clean Carfax report could still have been in a minor accident that the owner fixed privately, or could have mechanical problems that have not yet surfaced.
Carfax also does not inspect the car or verify the accuracy of the information it receives. If a service record was entered incorrectly or an odometer reading was recorded wrong, that error will appear in the report. The report is a summary of what Carfax found, not a may provide of the car's condition.
Combining Carfax with other checks
A Carfax report is most useful when combined with other steps. Before buying a used car, you should also get a pre-purchase inspection from an independent mechanic — someone not connected to the seller or dealership. A mechanic can spot problems that Carfax will never know about, like worn suspension parts, transmission issues, or rust underneath.
Check the title yourself through your state's DMV or Secretary of State office. Some states allow you to look up title information online using the VIN; others require you to visit in person or request the information by mail. This step confirms that the title is clean and that there are no liens against the car that Carfax might have missed.
Compare the VIN on the report with the VIN on the car itself — on the dashboard, door jamb, and engine block. If the VINs do not match, the car may have been in a major accident and rebuilt, or the documents may not belong to the car.
Frequently Asked Questions
Can I get a free Carfax report?
Some used car websites and dealerships offer free Carfax reports on their listings. If you are buying from a private seller, you will usually need to pay. Some banks and credit unions also offer free Carfax reports to members, so check with your financial institution.
What does a salvage title mean on a Carfax report?
A salvage title means an insurance company declared the car a total loss after an accident, flood, or other damage. The car was repaired and returned to the road, but it will always carry that history. Salvage-titled cars are harder to insure and resell, and the repairs may not be visible.
If Carfax shows no accidents, is the car definitely safe to buy?
No. Carfax only reports accidents that were reported to police or insurance. A car could have been in a minor accident that the owner fixed privately, or could have mechanical problems that have not yet appeared. Always get a pre-purchase inspection from a mechanic before buying.
What if the Carfax report shows a lien?
A lien means someone else has a legal claim to the car — usually a bank or lender. The seller cannot transfer a clean title to you until the lien is paid off. Do not buy the car until the lien is removed and the title is clear.
Can I check a Carfax report without the VIN?
No. Carfax requires the full 17-character VIN to search its database. If you do not have the VIN, you can find it on the car's dashboard, door jamb, registration, or insurance card.