 I bought my 2005 kia sedona from a private used car  (not KIA) dealer.  God bless that dealer!  For most of the first year he had the van back and forth trying to get and keep the engine light off.  Everything from power steering just letting go to exhaust o2 sensors.  They had a hard time just trying to get the parts needed.  Here is a list of some of the work done to the van:  throttle repair, piece by piece until the whole unit was done,  almost every o2 sensor on the car, power steering master cylinder let go, exhaust work, lubed manual sliding side doors multiple times still having problems, starter died, drivers power window motor stopped working, valve cover gasket leaked oil into spark plug well.  And in my opinion one of the worse problems with the van are the  blind spots!  Something you can't change or repair.  I have noticed a large blind spot on the right front view.  Where the rear view mirror is and the roof support are mounted.  The two put together make a large area where you can't see anything coming.  I almost had multiple accidents because of this.  Give me my old Dodge grand caravan any day!