The Hyundai NF refers to the second-generation Hyundai Sonata, produced from 2004 to 2009. This mid-size sedan featured a significant redesign with modernized styling, improved dimensions, and enhanced engine options compared to its predecessor. During its production span, the NF generation emphasized comfort, interior space, and efficient performance, making it a competitive choice in the midsize sedan market. The Hyundai NF's size and design evolution reflect Hyundai's growth in quality and market presence during the mid-2000s.