2. Ford F-Series
Ford sold 15.6 million F-Series from 1990 to present day. As a leader in truck development, the automaker brought forth advancements like the new high-compression V6 EcoBoost, a tailgate mounted step-up into the bed, and even the luxurious King Ranch package that pushed half-tons into the luxury segment. Most recently, over the last decade, Ford took truck styling in a new direction with its big boxy design — something Chevrolet and Dodge were quick to copy.