Trunk comparison: Kia Stonic vs Tesla Model Y

Key Differences

The Tesla Model Y offers significantly more cargo length: with the seats folded down, the trunk is 22.4 in (42%) longer and with the first row upright, the trunk is 16.5 in (61%) longer than the Kia Stonic.

The Kia Stonic, on the other hand, scores in vertical and lateral usability: the height of the trunk opening is 3.9 in (14%) larger, the depth from the loading edge to the trunk floor is 7.1 in (1700%) greater, and the width at the narrowest point is 3.9 in (11%) wider.

Smaller differences that hardly matter: the width of the trunk opening is only 0.8 in (2%) larger on the Model Y; the loading edge of the Stonic is 2.8 in (10%) higher above the ground (not highlighted as ≤10%).

What are the practical implications?

- Length (advantage Model Y): The significantly greater loading length makes the Model Y better suited for long items like skis, planks, long boxes, or flat furniture parts. Those who regularly transport long cargo or need to fold down the rear seats will find noticeably more flexibility with the Model Y.

- Vertical depth and opening height (advantage Stonic): The larger opening height and especially the much greater depth to the trunk floor create a deeper cargo space in the Stonic.

This makes it easier to store taller or bulkier items, allows better stacking, and hides luggage below the loading edge. For users transporting many tall boxes or bulky but not very long items, this is an advantage.

- Width at the narrowest point (advantage Stonic): The 3.9 in wider usable width at the narrowest point makes it easier to get wide items into the vehicle. Combined with the greater depth, this increases everyday practicality when transporting bulky goods.

- Loading edge and handling: The loading edge is slightly higher on the Stonic (2.8 in), which makes lifting heavy loads in a bit more strenuous; this is relevant for regular manual loading. The lower loading edge on the Model Y facilitates loading and unloading heavy items.

Conclusion

For long cargo and maximum loading length, the Tesla Model Y is clearly better. For bulky, tall, or wide items as well as for better stacking and hiding options in the trunk, the Kia Stonic is more suitable.

Which model fits better depends on the typical loading profile: long items → Model Y; wide/tall/bulky everyday cargo → Stonic.