Cars.com, an online resource for buying and selling new and used cars, has released its annual American-Made Index, with the Ford F-150 taking the top spot for the second year in a row. The ranking takes into account three factors to determine how "American" cars are, including domestic-parts content (percentage of a vehicle's parts considered to be "domestic," meaning built in the U.S. or Canada), final assembly point, and overall vehicle sales.

While the top two spots on the index remain the same from previous years, the bottom of the list introduces four models that are first-timers to the Index. Additionally, this year's index leans heavily towards foreign automakers, which fill seven of the top 10 spots, according to Cars.com.