These cars from American automakers are less than 50 percent American-made

The Kogod 2016 Made in American Auto Index looks at many aspects of a car’s creation process to understand the impact on the U.S. economy. Keith Srakocic / AP

Consumers who want to help the U.S. economy with their car purchase should take note: Not all American car brands are significantly American-made.

Last week, the Kogod 2016 Made in American Auto Index was released. The index aims to help consumers who are interested in making a positive impact on the American economy by revealing how much “domestically-produced content’’ a vehicle has.

The Index, developed by professor Frank DuBois of Amercian University’s Kogod School of Business, looks at what percentage of a car’s parts come from the U.S. and Canada, as well as looking at the country where the vehicle is assembled, the country where automakers conduct their research and development activities, the country where a vehicle’s engine and transmission is built, and the country where the profits for a vehicle’s sale ultimately end up.

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Strange as it might sound, some U.S. automakers produce vehicles with surprisingly little domestic content.

The Chevrolet Spark, for example, is a five-door hatchback produced by General Motor’s division in South Korea and has only 13 percent domestic content.

General Motors makes six cars with less than 50 percent domestic content, the most of any American automaker. Most of the vehicles with lower domestic content fall under GM’s Chevrolet brand and include one vehicle reserved for law enforcement, a Chevrolet Caprice Police Pursuit Vehicle.

(General Motors also has the most vehicles with more than 80 percent domestic content.)

Five Ford vehicles are also on the list of American cars with the least domestic content, including a Lincoln vehicle from Ford’s luxury line.

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Here are the American cars with less than 50 percent domestic content:

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