What Carfax does with a VIN number
Carfax is a for-profit company that collects and sells vehicle history reports. When you enter a VIN into Carfax's website or app, it searches its database for records tied to that vehicle — accident reports, service records, title transfers, odometer readings, and recalls. Carfax then assembles these into a report you can read online or read as a PDF.
The report does not tell you whether a car is safe to buy or whether it has hidden problems. It tells you what Carfax found in its records. If an accident was never reported to insurance or a police database, Carfax will not know about it. If a car was serviced at an independent shop instead of a dealership, those records may not appear. Carfax is useful as one piece of information, not as a complete history.
Key Takeaways
- Carfax charges for full reports but shows you a preview for free that includes title status, number of owners, and whether there are open recalls.
- The report pulls from insurance claims, DMV records, service records from dealerships, and auction houses, but does not include private repair shops or unreported accidents.
- You can look up a VIN on Carfax.com, through many used car dealer websites, or through some insurance company portals without paying extra.
- Carfax reports are most useful for checking title problems and recalls, less useful for determining whether a car has been in an accident that was never reported.
How to run a Carfax VIN lookup
Go to Carfax.com and enter the 17-character VIN in the search box on the homepage. Carfax will return a preview report within seconds. The preview shows the vehicle's title status (clean, salvage, branded, etc.), the number of previous owners, whether there are open recalls, and the vehicle's basic specs. You do not need to pay for this preview.
If you want the full report — which includes accident history, service records, ownership timeline, and odometer readings — Carfax will ask you to pay. A single report typically costs between $20 and $30, though prices vary. Some dealerships and car-buying services include a free Carfax report with their listings, so check there first before paying out of pocket.
You can also request a Carfax report through many used car dealer websites. If you are shopping on a dealer's site and see a car you are interested in, the dealer often has a link to the Carfax report for that specific vehicle. Some insurance companies also let you view Carfax reports through their customer portals at no extra charge.
What information appears in a Carfax report
A full Carfax report includes the vehicle's title status, ownership history with dates, odometer readings at each recorded event, accident and damage reports from insurance claims, service records from dealerships and repair chains, recall information, and whether the vehicle was ever reported as a lemon, flooded, or used as a rental or fleet vehicle.
The report also shows whether the title has been branded — meaning a state DMV has marked it as salvage, rebuilt, flood-damaged, or otherwise not a standard clean title. This is one of the most important pieces of information in the report, because a branded title can affect the car's value and your ability to insure it or resell it later.
Carfax pulls data from state DMVs, insurance companies, police reports, auto auctions, and service records from major dealership chains and repair networks. It does not include records from independent repair shops, private sales between individuals, or accidents that were never reported to police or insurance.
What Carfax does not show you
Carfax cannot tell you about accidents that were paid for out of pocket and never reported to insurance. It cannot show you work done at independent mechanics or local repair shops. It cannot detect mechanical problems, rust, or wear that was never formally documented. It cannot tell you whether a car was driven hard, neglected, or flooded in a way that was not reported to authorities.
For these reasons, a clean Carfax report does not mean a car is in good condition or has never been in an accident. It means Carfax found no records of accidents, title problems, or recalls in its database. A pre-purchase inspection by a trusted mechanic is still the most reliable way to learn about a used car's actual condition.
Carfax versus other VIN lookup services
AutoCheck is Carfax's main competitor and works the same way — you enter a VIN and get a report on the vehicle's history. AutoCheck is owned by Experian and pulls from different data sources than Carfax, so the two reports sometimes show different information. Some buyers run both reports to get a fuller picture.
The National Highway Traffic Safety Administration (NHTSA) offers a free VIN lookup at safercar.gov that shows only recalls and safety complaints. This is useful for checking whether a specific vehicle has open recalls, but it does not show accident history or title status. Many buyers use NHTSA's tool for free and then decide whether to pay for a full Carfax or AutoCheck report.
Some dealerships and car-buying platforms like Carvana, Vroom, and Edmunds include free Carfax or AutoCheck reports with their listings. If you are shopping through one of these services, you may not need to pay for a report separately.
When to use Carfax before buying a used car
Run a Carfax lookup before you make an offer on a used car. The free preview will tell you whether the title is clean and whether there are open recalls. If the title is branded (salvage, rebuilt, flood, etc.), you know when ready that the car has a serious history and will be harder to insure or resell.
If the preview shows open recalls, contact the seller and ask whether those recalls have been completed. Many sellers will have the work done before the sale, but some will not. You can also take the VIN to a dealership for that make and ask them to check whether the recalls have been addressed.
If the preview looks clean and you are seriously interested in the car, consider paying for the full report. The full report is most useful for checking the ownership timeline (to spot title-jumping or rapid flips) and for seeing whether there are insurance claims or service records that suggest major repairs.
How to read a Carfax report for red flags
Start with the title status. If it says anything other than "Clean," the car has a branded title and you should understand what that means before proceeding. A salvage title means the car was declared a total loss by an insurance company. A rebuilt title means it was salvaged and then repaired. A flood title means it was damaged by water. Each of these affects insurance, resale value, and reliability.
Look at the ownership timeline. If the car has had many owners in a short time, or if ownership changed hands multiple times in the same year, that can signal that the car had problems and was flipped quickly. Compare the odometer readings at each event — if they jump backward or stay the same across years, that suggests odometer fraud or data errors.
Check the accident and damage section. Carfax will list insurance claims with dates and descriptions. A single minor accident years ago is different from multiple accidents or a recent major claim. Look at the service records to see whether the car received regular maintenance or whether there are long gaps that suggest neglect.
Frequently Asked Questions
Can I get a free Carfax report?
The free preview on Carfax.com shows title status, number of owners, and recalls. The full report costs money, but many used car dealers include a free Carfax report with their listings, so check there first. Some insurance companies also provide free access to Carfax reports for their customers.
What does a branded title mean on a Carfax report?
A branded title means a state DMV has marked the car as salvage, rebuilt, flood-damaged, or otherwise not a standard clean title. This usually means the car was declared a total loss by an insurance company at some point. Branded titles affect insurance rates, resale value, and your ability to get financing.
Should I trust a Carfax report that says no accidents?
A clean Carfax report means Carfax found no insurance claims or police reports of accidents in its database. It does not mean the car was never in an accident — only that any accident was not reported to insurance or police. A pre-purchase inspection by a mechanic is still the best way to learn about a car's actual condition.
Can I look up a VIN on Carfax without paying?
Yes, the free preview shows the most important information: title status, number of owners, and recalls. You only pay if you want the full report with accident history and service records. Many dealership websites also provide free full reports with their listings.
What if the Carfax report shows an open recall?
Contact the seller and ask whether the recall has been completed. You can also take the VIN to a dealership for that make and ask them to check the recall status. Many recalls can be fixed for free at a dealership, and some sellers will have the work done before the sale.