Key Takeaways
- A history report shows accidents, flood damage, title problems, and odometer issues that were reported to insurance companies or state DMVs, but it cannot catch unreported repairs or private damage.
- Carfax and AutoCheck are the most common paid reports; NMVTIS is a free government database that shows title history but fewer accident details.
- A salvage title or rebuilt title means the car was declared a total loss by an insurer and then repaired — this is legal to sell but affects resale value and insurance costs.
- A clean report does not mean the car is problem-free; it means no major incidents were reported to the companies that feed data to the report.
- You should always have a mechanic inspect the car in person, regardless of what the history report says.
What Information Appears in a History Report
A history report includes title records (clean, salvage, rebuilt, lemon law buyback), accident and damage claims reported to insurance companies, odometer readings recorded at service shops and auctions, and registration history showing how many owners the car has had and where it was registered.
The report also flags whether the car was ever reported as stolen, declared a flood vehicle by an insurer, or sold at an auction (which often means it was a rental, fleet vehicle, or insurance total loss). Some reports include service records if the car was serviced at shops that report to the database, though this is incomplete — most independent mechanics and dealership service records do not appear.
What a history report does not show: routine maintenance, minor repairs paid out of pocket, accidents that were not reported to insurance, cosmetic damage, mechanical problems that have not yet caused a claim, or whether the current owner has kept up with recalls. A car can have a spotless history report and still need a $3,000 transmission repair next month.
Carfax vs. AutoCheck vs. NMVTIS
Carfax and AutoCheck are both subscription services that cost money per report (typically $20 to $30 for a single report, less if you buy a package). Carfax has the largest database of accident and insurance claims because it receives data directly from most major insurers. AutoCheck is owned by Experian and tends to have more detailed auction history, which is useful if you are buying a former rental or fleet vehicle.
NMVTIS is a free government database run by the Department of Justice that shows title history and whether a car has a salvage or rebuilt title. It does not include accident or insurance claims data, so it is less complete than Carfax or AutoCheck, but it is a good starting point if you want to check title status without spending money.
Many dealerships and private sellers will provide a Carfax report for free if you ask, so check whether the seller has already run one before you pay for your own. If the seller refuses to provide a report or says they do not have access, that is a reason to be cautious.
Understanding Salvage and Rebuilt Titles
A salvage title means an insurance company declared the car a total loss — the cost to repair it exceeded a threshold (usually 70 to 80 percent of the car's value, though this varies by state). The car is then sold to a salvage yard or auction house, where it may be repaired and resold. A salvage title stays on the car permanently; you cannot remove it by repairing the vehicle.
A rebuilt title means the car was previously salvaged but has since been repaired and passed a state inspection. The car is legal to drive and insure, but the rebuilt title will always appear on the registration. Insurance companies often charge more to insure a rebuilt-title vehicle, and the car will be worth less when you try to sell it — typically 20 to 40 percent less than an identical car with a clean title.
Some states have different title categories (like "branded" or "flood" titles) that indicate specific types of damage. Before you buy a car with a salvage or rebuilt title, contact your insurance company to confirm they will insure it and ask what the premium will be. Some insurers will not cover rebuilt-title vehicles at all, or will only offer liability coverage, not collision or comprehensive.
Why a Clean Report Does Not Mean a Safe Purchase
A history report is a snapshot of what was reported to insurance companies and state DMVs. If an owner paid for repairs out of pocket and never filed a claim, those repairs will not appear. If a car was in a minor accident that the owner settled privately, it will not show up. If the odometer was rolled back by a private seller (not at a dealership or auction), it may never be caught.
A clean report also does not tell you whether the car was properly repaired after an accident. A car could have been hit hard enough to bend the frame, repaired poorly, and still pass a history report check if the owner never filed an insurance claim. This is why a pre-purchase inspection by a trusted mechanic is essential — they can spot signs of frame damage, mismatched paint, and poor repairs that a history report will never catch.
Conversely, a history report might flag an accident that was minor and properly repaired years ago. Do not automatically reject a car because the report shows one accident; ask the seller for details about what happened and what was repaired.
How to Read the VIN and Run a Report
The VIN is a 17-character code stamped on the driver's side of the dashboard (visible through the windshield) and also on the driver's door jamb. You can also find it on the title, registration, and insurance card. Write down the entire VIN exactly as it appears — even one wrong digit will pull up a different car's history.
To run a Carfax report, go to carfax.com, enter the VIN, and pay for the report. AutoCheck reports are available at autocheck.com. For NMVTIS, go to vehiclehistory.bja.ojp.gov and enter the VIN to see title records. Each service will display the report when ready after payment (or for free, in NMVTIS's case).
If you are buying from a dealership, ask whether they have already run a report and will share it with you. Many dealerships display Carfax reports on their website or in the showroom. If you are buying from a private seller, you will need to run the report yourself.
Red Flags That Warrant a Second Look
A salvage or rebuilt title is not automatically a deal-breaker, but it requires extra caution. Get a pre-purchase inspection and confirm insurance coverage before you commit. Multiple owners in a short time period (more than three in five years) can indicate the car has had recurring problems that owners could not tolerate. A gap in registration history might mean the car was not driven for a period, or it might mean records are missing.
Odometer readings that jump backward or stay the same across multiple entries suggest the odometer may have been tampered with. If the car is listed as a flood vehicle, assume there is hidden water damage in the electrical system, engine, and interior — these cars often develop problems months after purchase. A lemon law buyback means the manufacturer took the car back under warranty because it had a persistent defect; the car is legal to resell but the defect may recur.
If the history report shows an accident but the car's body looks pristine, ask the seller directly what happened. If they cannot explain it or their story does not match the report, walk away.
Frequently Asked Questions
Can a car have a clean history report and still have serious problems?
Yes. A history report only shows what was reported to insurance companies and state DMVs. A car that was repaired privately, never insured for damage, or has a mechanical problem that has not yet caused a claim will show a clean history. Always have a mechanic inspect the car before you buy it.
What does it mean if the history report shows multiple accidents?
Multiple accidents do not automatically mean the car is unsafe, but they suggest the car has been in collisions more often than average. Ask the seller for details about each accident, what was repaired, and whether the repairs were done at a reputable shop. A mechanic can inspect the car to see whether repairs were done properly.
Is a rebuilt title car worth buying?
A rebuilt title car can be a good value if it was properly repaired and inspected by the state. However, insurance will cost more, resale value will be lower, and some buyers will avoid it. Get a pre-purchase inspection, confirm your insurance company will cover it, and negotiate the price down to account for the title issue.
Why do different history reports show different information?
Carfax, AutoCheck, and NMVTIS receive data from different sources. Carfax gets data from insurers; AutoCheck focuses on auction history; NMVTIS shows title records. A car might have a clean Carfax but show a salvage title on NMVTIS if the salvage was recent and not yet in Carfax's system. Check at least one paid report and NMVTIS for the most complete picture.
Should I buy a car if the seller will not provide a history report?
A seller who refuses to run a history report or share one is a red flag. You can run the report yourself if you have the VIN, but the refusal suggests the seller may be hiding something. Proceed with caution and get a thorough pre-purchase inspection before making an offer.