How to Read a Vehicle History Report (and What Red Flags to Watch For)
Buying a used car? Don’t skip this step.
A vehicle history report is one of the most powerful tools a used car buyer has — and one of the most misunderstood. At Open Lot Used Car Sales, we provide a vehicle history report on every car on our lot, because we believe informed buyers make confident buyers. Here’s how to read one, and what should make you pause.
What a vehicle history report tells you
Reports from services like Carfax and AutoCheck pull data from state DMVs, insurance companies, auto auctions, and repair shops to build a timeline of a vehicle’s life. At minimum, a good report should show you:
- Title history (clean, salvage, rebuilt, flood, lemon-law buyback)
- Reported accidents and the severity of damage
- Odometer readings over time
- Number of previous owners
- Service and maintenance records
- Whether the vehicle was used commercially (rental, taxi, rideshare, fleet)
Red flags that deserve a closer look
Odometer rollback or inconsistent mileage. If the mileage reported at a service visit is higher than the mileage reported later, that’s a serious problem — and in some cases, a federal crime. Any inconsistency should stop you in your tracks until it’s explained.
Salvage, rebuilt, or flood titles. These titles mean an insurance company declared the car a total loss at some point. Some rebuilt vehicles are repaired to a safe standard, but you should only consider one with an independent inspection and a significant price adjustment.
Frequent ownership changes in a short window. A car that changed hands three times in two years may have an underlying issue previous owners didn’t want to deal with. It’s not always a dealbreaker, but it’s worth asking about.
Gaps in the timeline. Long stretches with no registration, service, or inspection data don’t necessarily mean something’s wrong, but they mean the report can’t vouch for that period. Pair the report with a physical inspection.
Airbag deployment. If a report shows airbags deployed, make sure any repair was done correctly — airbags and their sensors are safety-critical systems.
What a report can’t tell you
A vehicle history report is a starting point, not a substitute for a mechanical inspection. It relies on reported data — not every accident or repair gets reported. That’s why we recommend pairing your report review with a pre-purchase inspection (see our full checklist) and a test drive.
The bottom line
Never buy a used car without reviewing its vehicle history report first. At Open Lot Used Car Sales, we make this easy — every vehicle we sell comes with a report available for your review before you commit. Have questions about a report you’re looking at? Stop by or give us a call; we’re happy to walk through it with you.
