Trunk comparison: Kia Sportage vs Kia Stonic

Key Differences

The Kia Sportage offers a trunk that is 12.6 in (23%) longer with the seats folded down and a trunk that is 8.3 in (30%) longer with the first row of seats upright than the Kia Stonic.

In contrast, the Kia Stonic has a trunk depth (measured from loading edge to trunk floor) that is 7.1 in (1700%) greater, meaning a significantly deeper trunk floor profile below the loading edge.

What impact does this have on usability?

The significantly greater loading length in the Sportage makes it easier to accommodate longer items (e.g., furniture panels, skis, longer luggage) more flatly—both with the seats upright for everyday use and with the seats folded down for large-volume transports.

For families or users who regularly transport long or bulky cargo, the Sportage is more flexible in practice.

The greater depth difference in the Stonic means that the cargo area below the loading edge is more pronounced: items can be recessed deeper, which makes storing smaller, irregularly shaped, or loose items more secure and reduces visibility into the interior.

At the same time, a lower cargo floor can make lifting heavy loads more difficult because more lifting effort is required, and for very long items, it can limit usable loading height above the loading edge.

Other, smaller differences slightly affect practical use: the Sportage’s trunk opening is 2.4 in wider (better for wide items), while the Stonic’s opening height and loading edge height are somewhat greater (8% and 7%, respectively), which can make loading easier or harder in certain situations.

Overall: the Sportage scores for length and multi-purpose transport; the Stonic offers a deeper cargo well that can be more practical for securely storing smaller loads.