Trunk comparison: Kia Stonic vs Tesla Model 3

Key Differences

The Tesla Model 3 offers significantly more cargo length: with the seats folded down, the trunk is 19.7 in (36%) longer, and with the front seats upright, even 15 in (55%) longer than the Kia Stonic.

On the other hand, the Kia Stonic has advantages in several areas: the trunk opening is 10.6 in (52%) higher, the depth from the loading edge to the trunk floor is 2.8 in (64%) greater, the loading edge is 3.9 in (15%) higher above the ground, and the narrowest width inside the trunk is 3.9 in (11%) larger than in the Tesla.

The width of the Tesla's trunk opening is only 1% larger and therefore insignificant for classification.

What Impact Do These Differences Have on Usability?

Transporting long items: Due to the significantly greater cargo length, the Tesla Model 3 clearly has the advantage. Long materials (e.g., slats, skis, long boxes, or furniture parts) can be transported more easily and often completely flat in the Tesla.

Transporting tall and bulky goods: The higher trunk opening and greater interior height/depth of the Kia make it easier to load tall boxes or bulky items that require more vertical space. Those who often transport tall boxes or bulky shopping have advantages with the Stonic.

Wide items and tight spots: The larger narrowest interior width in the Kia increases the chance of maneuvering wide items through the trunk. For very wide loads, the Stonic is therefore more practical.

Loading and unloading as well as handling heavy loads: The lower loading edge of the Tesla makes lifting and sliding heavy items easier—less effort when loading and unloading. The Kia requires more lifting work due to the 3.9 in higher loading edge, despite the larger opening and interior space.

Everyday practicality: For frequent transport of long or many suitcases, the Tesla scores points. For irregular, bulky, tall, or wide loads (e.g., moving boxes, tall containers), the Kia is better suited, provided the higher loading edge is not an obstacle.