ProblemsByVin Studies
Data studies · NHTSA

ProblemsByVin data studies

Original analyses built on the U.S. NHTSA owner-complaint and recall record. Free to cite with attribution — the underlying datasets live in the data center.

June 23, 2026
America’s Most-Complained-About Engines & Transmissions
Every NHTSA owner complaint mapped to the specific engine or transmission platform, ranked across documented-defect families.
Sponsored
Get a free warranty quote →