Dealers have data. Buyers have CarScorer. Every piece of information we use is publicly available — we just do the work of pulling it together automatically.
NHTSA recall counts, owner complaint volume, and NCAP crash-test ratings — pulled directly from the federal database for every VIN.
We compare the asking price to what comparable vehicles actually sell for, not just list for. No paid data sources — community-sourced comps.
A cheap car that requires a dealer for every repair isn't cheap to own. The formula accounts for which vehicles you can actually work on yourself.
A CarScorer rating is a weighted average across nine dimensions, adjusted for brand-specific penalties (CVT transmissions, German luxury parts costs, accident history) and compressed to a 0.5–10.0 scale. Higher is better.
How the asking price compares to what similar vehicles actually sell for. Overpriced listings score poorly here.
Informed by NHTSA owner complaint volume for the model year. High complaint counts lower the score.
How accessible the vehicle is to service — Japanese and Korean vehicles score higher here. German luxury brands score lower due to proprietary tools.
Local parts availability and typical replacement cost. Common domestic and Japanese vehicles score higher.
Miles driven relative to the brand-adjusted life expectancy. Japanese brands are penalised less for higher mileage because their ceiling is higher.
Routine upkeep cost — oil changes, brakes, filters. Luxury European vehicles score lower.
NHTSA NCAP crash-test star rating, if available.
EPA combined city/highway estimate.
Model year relative to the current year. A small factor — reliability and repairability matter more than age.
The default formula weights are a starting point. Users can take a 13-question preference quiz to personalise the formula to their situation — a professional mechanic with a full shop cares very differently about repairability than someone who never opens the hood.
Every data point CarScorer uses is available free from the NHTSA (National Highway Traffic Safety Administration):
No scraping. No paid data partnerships. No MarketCheck, no CarFax API, no dealer network feeds. The NHTSA API is open to anyone, free of charge, with no key required. CarScorer just calls it automatically so you don't have to.
CarScorer was built by a Management Information Systems student at Tarleton State University — not as a class project, but as a real tool for real car buyers. The motivation was simple: buying a used car is one of the largest financial decisions most people make, and the information asymmetry between dealers and buyers is enormous.
Dealers know which vehicles have documented problems, which transmission types fail, and which models cost twice as much to maintain as their competitors. Buyers are left reading forum posts and hoping for the best.
CarScorer tries to close that gap. It's not perfect — no score replaces a qualified mechanic's pre-purchase inspection — but it gets you to the right shortlist faster, and helps you walk away from the wrong ones.
Questions or feedback: help@carscorer.com
No account required for a basic check. Enter any VIN and get recall data, known issue warnings, and a reliability score in under a minute.
Get started — it's free