Two 2023 Kias, same family DNA, different missions: Sportage is the medium SUV, Sorento the large one with room for extra humans and their lunchboxes.
Sportage: 5 seats, medium SUV; Sorento: 7 seats, large SUV; AWD available on both; hybrid options on select trims; Sorento tows more and carries more cargo with row three folded.
Sportage pros: easier to park, keener price, tidy ride/handling, and better fuel use in like-for-like petrols; cons: no third row, smaller boot, and lower towing limits.
Sorento pros: proper 7-seat space, bigger boot (with the third row down), stronger towing, and a choice of V6, diesel or hybrid; cons: higher price, thirstier V6, and bulkier around town.
Test both, measure pram/dog/esky fit, and choose the compromise you can live with. Consult official documentation for exact figures.