Carfax
A commercial vehicle history report aggregator covering accidents, ownership, service records and title brands.
Carfax (a subsidiary of S&P Global) is the most widely-known commercial provider of vehicle history reports in the US. Carfax aggregates data from over 100,000 sources — including state DMVs, body shops, dealer service records, rental car companies, police accident reports and inspection stations — to produce a single report covering a vehicle’s reported lifecycle.
A Carfax report typically shows: title brand history (though less authoritatively than NMVTIS), the chain of ownership and registration locations, reported accidents with severity classifications, service-record events, rental and fleet history, and reported odometer readings. The accident-history coverage is what most buyers actually buy Carfax for — NMVTIS only captures accidents severe enough to result in a title brand.
Important caveats: Carfax only sees what gets reported to its data sources. An accident repaired without an insurance claim, paid out of pocket at an independent body shop, may never appear. Carfax is best used as one input among several — cross-reference with NMVTIS, with auction history (where applicable), and with a pre-purchase physical inspection.