The Kia Sportage and Hyundai Tucson are essentially the same car under the skin, so if you were comparing like for like, it would simply be down to personal preference.

We bought a Kia Ceed instead of the Hyundai i30 some years ago for that reason. Both were roughly the same price, same spec but the Ceed had more space inside which was a plus point.

The other plus point for us was the Kia warranty covered us for 7 years instead of 5 years of the Hyundai. OK, we only kept it 5 years but we were able to sell it with 2 years of warranty remaining and on a private sale that certainly helps compared to selling a Hyundai with no warranty.

But there is one proviso here, after its 3rd birthday the Kia warranty is limited to 100,000 miles thus if you had exceeded 100,000 miles there would be no warranty. The Hyundai warranty is unlimited mileage for the whole 5 years.

If you are a higher mileage driver buy the Hyundai, if you do under 14,000 miles a year buy the Kia.