The car directory and the feature guides answer different questions, so they use different evidence. Here is the line between them.
The FuelEconomy.gov bulk dataset supplies each U.S.-market model year and its exact EPA-tested configurations: carline, fuel and powertrain, engine or motor, driven wheels, transmission, economy and available range/charging fields. Each configuration links back to its unique EPA vehicle ID.
FuelEconomy.gov data ↗EPA carline names sometimes include badges such as LE, Touring or Woodland Edition, but they are not a complete package catalog. When the source does not identify a retail trim, we do not invent one; visitors are directed to the window sticker, build sheet or manufacturer VIN portal.
Owner manuals, official support pages, specification tables and owner resources are the preferred evidence for a feature guide. The relevant link and manual section are shown on the guide.
NHTSA’s Vehicle Product Information Catalog may be used to normalize or validate vehicle identity. It is a supporting catalog source, not evidence for operating instructions.
NHTSA vPIC API ↗A relevant YouTube video can illustrate a procedure. Videos are supplementary, must match the stated scope and never replace the written instructions or official source citation.
The vehicle catalog currently covers U.S. EPA records. Equipment, names and procedures can differ in Canada, Europe, Türkiye and other markets—even for a visually identical model.
Each researched guide states its market. We will add other markets only with a reliable catalog and owner documentation for that region.