Hyundai engineers are testing the 2010 Sonata, codenamed (YF) in extreme weather conditions in the Northern Sweden. Although it's heavily camouflaged, we can still give a report on it.
New Sonata will have a similar coupe-style design like the VW Passat CC and new Opel Insignia. Hyundai has developed a new platform for the 2010 Sonata. Engine variants will stay, with a 2.4L with 180hp, and a 3.3L V6 with 250hp. Though, rumors report that Hyundai are working on a gasoline-electric hybrid system.
On its home market in South Korea it is expected to go on sale end of this year, with the rest of the world following soon after.