Reason is unknown, was driving down road and car yanked to the right cause family to wreck in to a guard rail, no lights appeared before wreck, it was not raining and was not speeding. Clear sunny day. Police report has been made and has made several attempts to contact KIA, car has been in body shop since July. Wreck has happened in July. Car is still at body shop KIA told body shop there was no time line on getting any parts to repair, they do not know if it will be this year.