Trunk comparison: Kia Stonic vs VW Polo

Key Differences

The Kia Stonic offers a significantly larger trunk opening and more loading depth than the VW Polo: the opening height is +3.9 in (14%) greater in the Stonic, and the depth (loading edge to trunk floor) is even +3.9 in (125%) higher.

Smaller differences: the Stonic has +1.2 in (5%) more trunk depth with the first row of seats upright, +1.2 in (3%) more width at the narrowest point, and a +2.8 in (8%) larger opening width; the Polo is marginally longer with the seats fully folded (+0.4 in / 1%).

The loading edge of the Stonic is +2.8 in (10%) higher above the ground.

Impact on Usability

The higher values in the Stonic practically mean more usable vertical space and a deeper cargo area: bulky or tall items (e.g., suitcases, boxes, bulky sports equipment) can be stored more easily standing up or with more clearance.

The significantly greater depth (+125%) improves the ability to accommodate flat-lying, long, or bulky items.

Counteracting this is the higher loading edge of the Stonic (+2.8 in): heavy cargo must be lifted higher, increasing physical strain when loading and unloading.

The Polo has the advantage here with a lower loading edge, which facilitates handling heavy or frequently loaded items. The marginal length and width differences (1–8%) are usually negligible in everyday use.

In short: Those who often need to carry tall or deep bulky loads benefit from the Kia Stonic. Those who frequently have to lift heavy loads or prefer a lower loading edge for easier loading and unloading tend to be better off with the VW Polo — the other differences are rather small and hardly relevant in practice.