Trunk comparison: Hyundai Kona vs Kia Stonic

Key Differences (>10%)

The Hyundai Kona offers a significantly longer loading length: with the seats folded down, the Kona's trunk is 11.4 in (21%) longer, and with the front seats upright, it is 6.7 in (25%) longer than the Kia Stonic.

The Kia Stonic, on the other hand, has a notably different trunk geometry: the trunk depth (loading edge to trunk floor) is 5.1 in (+260%) higher in the Stonic than in the Kona, and the Stonic's loading edge is also 3.5 in (13%) higher above the ground.

Implications for Usability

Due to the Kona's longer loading length, longer items can be transported more easily (e.g., slats, skis, long furniture parts) — both with folded seats and with the rear bench left upright. Those who regularly need to carry long loads clearly have the advantage in the Kona.

The deeper trunk well of the Stonic creates more volume below the loading edge: shorter, bulky cargo can be recessed further down, resulting in more usable storage space without folding down the rear seat.

However, the 3.5 in higher loading edge means that heavy cargo must be lifted more when loading and unloading, which makes handling more difficult.

Smaller differences (trunk opening height +0.4 in, narrowest width +0.4 in, Kona's opening width +2 in) are under 10% and are usually negligible in practice.