Carfax vs AutoCheck
The two names most buyers run into. They pull from overlapping but different data, price differently, and each is stronger for a different kind of shopper.
Both build the same kind of timeline — title, accidents, salvage, theft, odometer, recalls — but they license different data and sell it differently. Here's how to think about the choice.
Carfax
The most recognized consumer brand, with a large service-and-maintenance dataset that many independent shops report into. Strong brand trust and detailed service records, sold mostly as single or small report bundles at a premium price. If maintenance history matters to you, it's a natural pick.
AutoCheck
Owned by Experian and widely used at auto auctions. Its signature is a numeric score that summarizes a vehicle against similar ones, which makes quick comparison across several cars easy. Popular with dealers and high-volume buyers.
What both cover
Whichever you choose, the backbone is the same. Both pull title and brand history, reported accidents, total-loss and salvage records, theft flags, odometer readings, and open recalls into one timeline tied to the VIN. Both draw on the federal systems — NMVTIS for title and brand data, NHTSA for recalls — and layer state, insurance, and auction records on top. So for the highest-stakes questions — was this car written off, flooded, stolen, or its mileage rolled back — either one will usually surface the answer if it reached a record at all.
Where each is thinner
The differences show up at the edges. Because they license different state and insurance feeds, one can carry an accident or a title event the other misses, which is why serious buyers sometimes run both on an important car. Neither sees what never reached a database — cash-settled repairs, maintenance at independent shops, or the car's current mechanical condition. And coverage varies by state for both, so a crash in a low-reporting state can be absent from either. Read whichever you choose as a strong starting point, not a complete record.
Run the free checks first
Before paying for either, run the checks that cost nothing: the NHTSA recall lookup by VIN, and the NICB VINCheck for reported theft and certain salvage records. They will not give you a full history, but they are quick, and they can flag a problem before you spend anything. Decode the VIN too, to confirm the listing's year and engine match the car. Then reach for a paid report when you need the full accident, title, and salvage picture.
How to choose
- Buying one specific car and want deep service records: Carfax.
- Comparing many cars or buying at auction: AutoCheck's score.
Prices change
Common questions
Neither is complete. Each licenses a different mix of state, insurance, auction, and federal data, so the most accurate one depends on the specific vehicle and where it has lived. Serious buyers sometimes cross-check two.
Both are common at dealerships. AutoCheck is widely used at auctions and comes from Experian; Carfax is the most recognized consumer brand.