Tl* the contact owns a 2009 kia amanti. while driving approximately 60 mph the vehicle suddenly decelerated on its own. the contact was able to drive to the shoulder of the road and turn the vehicle off. within approximately forty five minutes the vehicle functioned normally. the failure occurred twice before the contact was able to drive the vehicle home. the vehicle was not taken to a dealer for diagnostic testing. the vehicle was not repaired. the approximate failure mileage was 20,300. updated 09/15/11 *bf