1 year & over 18k miles into ownership of EX w/ AWD: paid the premium for navigation & phone handsfree; 6 wks after purchase it stopped uploading phone contacts (so now it's NOT "handsfree"); 9 months later it wiped out navigation address book for no apparent reason. Kia service claims compatibility issue w/world's most popular phone (iPhone)--but my hubby's 10 yr old Audi can link up to it! & they can't explain/fix the nav address book problem.
Initial mpg was ABYSMAL, improved steadily after break-in period. Great on highway: smooth, firm ride, 26 mpg on a long trip @ consistent speeds; 17-19 mpg city. Feels unstable on curves at moderate speeds, like car's not heavy enough to grip road.
Navigation is about 96% accurate and very handy. Cooled driver seat is a God-send! Audio bluetooth streaming from ipod is consistent.
Visibility is poor, so the backup camera is a must, and works well-- great wide-angle field of view.
Auto lights staying on for a while after I exit the vehicle is helpful at night.
And the highway ride is a pleasure: smooth, with great acceleration.
Kia needs to hire a couple of people to keep up with popular smartphones' updates to ensure handsfree compatibility beyond the first few weeks after purchase of vehicle-- like, at least every 3 months.
At the EX level of trim, the PASSENGER seat should also have cooling & electric adjustments (the owner of the car is not always the one driving on long trips!!).
Finally, better quality control on electronic components (phone, navigation), and better education of service personnel so owners don't have to hear "We don't know! We don't understand why!" so often.