I had the 2011 GT, which is the 1st batch CBU of the previous version.
Sold it last year with mileage about 130k.
It’s a good and reliable ride, other than the normal wear and tear, with the normally reported issue being the aircond compressor after a few years of usage.
My main complaint is the hight FC as it is an Awd.
For my mixed drive, with full tank of 55L, I was only getting 350-400km.
For comparison, on my 2018 CX-5 2.2D, although it is a turbo diesel and Fwd only, for the same route, my mileage is about 650-700km for 56L tank

It is value for money, but there are a few versions of this 3rd generation Sportage, SL variant. try to look for the one with L shape fog lamp which is newer (see photo). So far, no major issue with the quality except for the aircon. Do check if the unit you are buying has no problem with the AC unit.