Kia's midsize sedan is virtually unchanged for 2007. Recently redesigned for what Kia tabbed a "2006.5" model year, Optima shares its basic design with the Sonata produced by Kia's corporate-parent, Hyundai. Optima comes in LX and uplevel EX models with a choice of a 161-hp 4-cyl engine or a 185-hp V6. A 5-speed manual transmission is standard on the 4-cyl LX. A 5-speed automatic is optional for that model, standard otherwise. All Optimas include front side airbags and curtain side airbags. ABS and traction/antiskid control are available for automatic-transmission models. Leather upholstery and heated front seats are optional for EXs, as are power-adjustable pedals.