The Kia Motors Corp was recently purchased by Hyundai Motors and will most likely be used as a 'cheaper' Hyundai line for a few years (Think Dodge vs. Plymouth) before the line is fully integrated into Hyundai Motors' offering.
As of now, the only immediate changes have been that all the engines in the Kia passenger cars have been replaced with engines with those used in comparable Hyundai models.
Among Kia's more notable features is it's 10 year Long Haul Warranty Powertrain warranty. The North-American Kia line as of mid-2002 is: