Vehicle Safety Guides
Plain-language guides on NHTSA complaints, recalls, safety ratings, and your rights as a vehicle owner — all grounded in federal data.
Understanding NHTSA Vehicle Complaints: A Consumer Guide
Learn what NHTSA complaints are, how the system works, how to file a complaint, and how complaint patterns lead to investigations and recalls.
Vehicle Recalls Explained: What Every Car Owner Needs to Know
What triggers a recall, how to check if your vehicle is affected, what the remedy process looks like, and the most common recall categories.
Safest Car Brands in 2026: What the Data Shows
A data-driven look at NHTSA 5-star ratings, complaint rates by manufacturer, and what to look for when evaluating a vehicle's safety record.
Most Reliable Used Cars: A Data-Driven Guide
How to use NHTSA complaint data to evaluate used car reliability, which models stand out across 5–10 year windows, and what to check before buying.
Lemon Law Guide: Your Rights When You Buy a Defective Vehicle
Federal vs. state lemon laws, what qualifies as a lemon, the steps to take if you suspect a defective vehicle, and how NHTSA data supports your claim.
How to Research a Used Car's Safety History Before You Buy
A step-by-step guide to researching any used vehicle's safety record using NHTSA complaints, recall data, crash test ratings, and investigation history.
Understanding Vehicle Recall Severity: From Advisory to Critical
How to assess recall urgency, what "Do Not Drive" orders mean, common high-severity categories, and what to do when your car is recalled.
About These Guides
PlainCars guides are written to help consumers understand vehicle safety data from the National Highway Traffic Safety Administration (NHTSA). All information is sourced from official federal data, including NHTSA complaint records, recall databases, and the New Car Assessment Program (NCAP). Use our make and model pages or the recall search to look up specific vehicle safety data.
Methodology
Every guide and data page on PlainCars is grounded in three federal sources, cited on every page and never rewritten: the NHTSA Office of Defects Investigation (ODI) complaints database, the NHTSA recall campaign API, and NHTSA New Car Assessment Program (NCAP) crash-test ratings. Consumer complaints are self-reported and unverified by federal engineers — the ODI dataset exists so that patterns, not individual filings, can be detected. Recall data reflects the actions manufacturers have already been compelled to remedy; NCAP ratings reflect standardized barrier and rollover tests conducted at certified facilities. PlainCars does not rewrite, score, or editorialize the underlying figures. See the full methodology page for the processing pipeline, data-currency cadence, and limitations.