Bought this 2006 in 2011 with under 40K miles on it.
No problems - easy to work on.
I change my own oil and just flushed the transmission fluid by myself.
I was hesitant to buy with all the bad reviews - think most posters just got lemons - I had a Mercury Sable that had all the problems described in the other posts.
Plenty of power - lots of room.
Came with a DVD player for the kids and the sliding door windows slide down.
Price was awesome - bought in 2011 with under 40K miles for 12K with trade in - 1998 Windstar with tons of problems.
This van has a bit more room than the old Winstar.
Super quiet - barely hear the engine running.
Oil change is 5.5 quarts - that should help the engine last a long time.
Get rid of the middle console between from seats.
Gets a little under 20 MPG.
Impossible to find a repair manual - but found enough KIA forums with good advice.