Kia Sportage flat spot @ 1500rpm.
Have recently had the EGR valve replaced on my Kia Sportage & fingers crossed the early signs are the problem has gone away.
My Sportage has had numerous trips to the garage with the usual "computer says no" result. I did some research myself by typing in 'Kia Sportage flat spot' into Tinternet and went back to the garage and suggested they contact Kia as others were also experiencing this flat spot at around 1500rpm when pulling away at junctions or in slow moving traffic. Also the flat spot seemed to improve when I had the aircon running.
Anyway to cut a long story short, apparently the fault doesn't show up on the normal diagnostic checks, the garage carried out some other checks to try and recreate/identify the fault and here we are a new EGR valve and no flat spot.
Hope this helps & good luck.