Trunk comparison: Kia Stonic vs Mazda Mazda CX-5

Key Differences (highlighted)

The Mazda CX-5 offers a 13 in (≈24%) longer cargo area with the seats folded down than the Kia Stonic. With the front row upright, the CX-5 is even 10.6 in (≈39%) longer.

In contrast, the Kia Stonic has a significantly greater trunk depth (distance from loading edge → trunk floor): this value is 5.1 in (≈260%) higher than the CX-5.

Other values: trunk opening height and narrowest width are the same; loading edge height differs by only ~0.4 in (≈1%) and the CX-5’s opening width is about ~7% larger (also under 10% and not highlighted here).

Impact on Usability

More length in the Mazda CX-5 (both with folded seats and in everyday use) means:

• Significantly better suitability for long items (e.g., slats, furniture parts, bicycles with the front wheel removed) and for larger amounts of luggage.
• Better everyday practicality for vacation luggage or shopping because more usable length remains even with occupied rear seats.

The greater trunk depth of the Kia Stonic means:

• A deeper cargo compartment that allows loading to be placed lower and thus more securely “recessed” — advantageous for stabilizing smaller luggage and preventing it from rolling around.
• However, the deeper compartment can make sliding in very long, flat items more difficult and retrieving items from the floor more strenuous (requiring more bending/reaching).

Practical conclusion: Those who regularly transport long or bulky items and need a lot of cargo volume benefit more from the Mazda CX-5. Those who are more compact on the go but appreciate a deeper, well-secured cargo compartment for boxes and shopping will find a practical advantage in the Kia Stonic.