Vehicle History Risk Scorer

The tool adds weighted points from five inputs: accident count, most serious damage, salvage/rebuilt/total-loss markers, mileage consistency, and the number of title/registration red flags. The total is capped at 100, then mapped to a verdict range (Low, Mild, Moderate, High, Severe). If severe markers are present—like salvage/total loss, flood/fire, rollback suspected, or frame damage combined with other title/odometer issues—the verdict is elevated even if the raw score is borderline.

This calculator only uses report signals; it does not inspect the vehicle and it can’t estimate repair cost, safety outcomes, or resale impact. Reporting omissions are possible, so a “Low risk” score doesn’t guarantee the car is problem-free—especially if the report coverage is incomplete. Conversely, some older vehicles may show serious past events, and the tool treats high-risk markers as high priority because title/odometer issues can affect ownership and legality, not just condition.

If mileage is set to “rollback suspected,” the tool will surface a high-priority warning and push the verdict to at least High risk because odometer issues are difficult to “unwind.” If you select a strong damage category like frame or flood/fire, you should expect a much higher score even with low accident counts. If all inputs are “clean” but you still suspect the report is incomplete, treat the result as an uncertainty-aware starting point rather than a final decision.

A history report is evidence, but it isn’t a substitute for a pre-purchase inspection, title verification with the DMV (where applicable), and test-drive diagnostics. Don’t rely on the score alone to decide on a high-dollar purchase or when you see severe markers like salvage/total loss, flood/fire, rollback suspected, or frame damage—those should trigger deeper diligence. Also double-check your inputs; an “unknown” selection typically adds caution rather than clearing risk.