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Data studies

Used-car reliability, by the numbers.

Rankings built from the NHTSA's public recall and complaint database, scored with the CarScorer reliability formula. Free to read and free to cite.

Data study
Most-Recalled Used Cars
The used cars with the most open NHTSA safety recalls, ranked from federal recall data. See recall counts, owner complaints, and reliability scores side by side.
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Data study
Most Complained-About Used Cars
Used cars ranked by NHTSA owner-complaint volume — the models drivers report problems with most, from the federal complaints database.
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Data study
Used Cars to Avoid
The lowest-scoring used cars in our database, ranked by the CarScorer reliability score — built from NHTSA recalls, owner complaints, and known model issues.
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Reference dataset
The CarScorer Used Car Reliability Index
The full CarScorer reliability ranking of popular used cars, scored from NHTSA recall and complaint data. A complete reference table with recall counts, complaint volume, and reliability scores.
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