Seeing this post made me curious. So I did some digging. One thing I just discovered is that the Kia has a 13.0:1 compression ratio, requiring premium unleaded fuel. This will increase your driving cost over the life of the car in a rather dramatic fashion, as premium (not mid-grade, it needs the high octane stuff) gasoline can cost 20 to 30 cents more per gallon.
I'll add more if I find more of interest.