Trunk comparison: Kia Stonic vs Seat Ibiza

Key Differences

Of the measured dimensions, two differences stand out significantly: The loading edge of the Kia Stonic is 3.1 in (12%) higher above the road than that of the SEAT Ibiza, and the width of the trunk opening of the Kia Stonic is 4.3 in (13%) larger than that of the SEAT Ibiza.

These two values exceed the 10% mark and have the greatest impact on practical use.

Other, Smaller Differences

With the rear seats folded down, the SEAT Ibiza offers a cargo space that is 1.6 in (3%) longer, while the Kia Stonic has 0.4 in (1%) more depth with the first row of seats upright.

The height of the trunk opening is 1.2 in (4%) larger in the SEAT Ibiza, and the depth of the trunk (loading edge to floor) is 0.4 in (6%) higher. At the narrowest point, the Kia Stonic's trunk is 2.4 in (6%) wider.

Impact on Usability

The higher loading edge of the Kia Stonic makes lifting heavy or bulky items noticeably more strenuous when loading — frequent loading and unloading of large suitcases, furniture pieces, or strollers becomes more cumbersome.

On the other hand, a higher loading edge can offer slight visibility or impact protection advantages but is generally a disadvantage for everyday usability.

The significantly larger trunk opening of the Kia Stonic makes loading wide or irregularly shaped items much easier: bulky packages, wide boxes, or furniture parts fit more easily through the opening and are easier to maneuver.

Combined with the slightly greater width at the narrowest point, this means that those who often transport wide loads have a practical advantage in the Stonic.

The SEAT Ibiza, on the other hand, scores with a lower loading edge height and a slightly larger opening height as well as a bit more depth with folded seats.

This makes loading heavy items more comfortable and loading taller items (e.g., suitcases, boxes) somewhat easier — especially when frequent lifting should be avoided.

Conclusion

For users who often need to load wide or bulky items, the Kia Stonic is more practical due to the larger trunk opening, despite the higher loading edge.

For users who frequently handle heavy items or want to avoid a lot of lifting, the SEAT Ibiza is more comfortable due to the lower loading edge and slightly larger opening height. The other differences are minor and have little impact on everyday use.