Cars.com changed its index metrics last year as globalization of the supply chain meant only three nameplates could have qualified with the original criteria -- down from 60 qualifying vehicles when the index launched. Cars.com added three criteria -- country of engine origin, country of transmission origin and U.S. factory employment relative to the company's sales footprint -- to its original criteria that measured assembly location and domestic parts content.
The Jeep Wrangler, made by FCA in Toledo, Ohio, topped the index for the 2017 model year, followed by the Cherokee and Taurus.
Cars.com, an online car research site, started ranking the "most-American" cars and trucks more than 10 years ago. Using criteria including assembly location, domestic-parts content as determined by the American Automobile Labeling Act, engine sourcing, transmission sourcing and factory jobs provided by each automaker's U.S. plants determine American-Made Index eligibility.