Most 'American-made' 2013 cars

Domestic brands have the most American-made content in the United States according to a new index released by American University's Kogod School of Business. Professor Frank DuBois, a global supply chain management expert, led the analysis, which considered not only where each vehicle's parts were produced, but also the location of the manufacturer's headquarters and other details, all in an effort to help consumers buy American.

“If you break down a single 'American-made' transmission, you'll find many smaller parts, each stamped with its own country of origin. You may well find 80 percent of the parts inside that transmission didn't come from the U.S.,” said Dubois.

To narrow down the options, DuBois' team collected data from several sources, including recent American Automobile Labeling Act reports. The AALA was enacted in 1992 to inform consumers about the percentage of American content which comprises each car. AALA data specifies the percentage of U.S./Canadian parts content for each vehicle, including where the engine and transmissions were built.

DuBois' index used these details as well as each vehicle's overall AALA score, but also factored in:

-- Profit margin; Where the automaker's global headquarters is located

-- Where research and development took place

-- Location of production for: body, interior, chassis, electrical

Below, we've listed the top-five most American-made 2013 models from DuBois' index. Several vehicles ended up with tied scores, resulting in multiple winners for each position