Trunk comparison: Kia Sportage vs Skoda Karoq

Key Differences
Clear strengths emerge on both sides when it comes to the trunk: The Kia Sportage offers only slightly more length with the seats folded down, but in everyday use, especially with the first row of seats upright, it has a length advantage of +5.5 in (18%) over the Škoda Karoq, making it more suitable for longer, flat items.
The Škoda Karoq, on the other hand, scores with significantly greater vertical usability: the trunk opening is +7.5 in (26%) higher and the depth from the loading edge to the trunk floor is considerably larger at +5.9 in (1400%).
Smaller differences: the Sportage's loading edge sits +1.6 in higher above the road, the narrowest trunk width is +1.2 in larger in the Sportage, and the opening width is +0.4 in wider — these values are under 10% and less significant.
Impact on Usability
The longer loading surface of the Sportage with the seat row upright makes it more practical for elongated items (e.g., long packages, boards, or folded skis) that need to be placed crosswise or lengthwise. The slightly larger narrow width and opening width support loading wider, flat cargo.
The Karoq, due to the significantly higher opening and much deeper loading floor, is better suited for tall or bulky items: standing boxes, taller furniture parts, or bulky suitcases can be accommodated more easily.
Additionally, the lower loading edge of the Karoq (since the Sportage's loading edge is 1.6 in higher) reduces lifting effort when loading heavy items.
In short: Sportage = advantage in length and some width (longer, flat cargo). Karoq = advantage in height, depth, and easier handling of heavy/bulky items (higher cargo space, deeper floor, lower loading edge).