Trunk comparison: Mercedes Benz GLC vs Seat Ibiza

Key Differences

The Mercedes‑Benz GLC offers significantly more cargo length: with the seats folded down, the trunk is 13.4 in (+24%) longer and with the first row of seats upright, 9.8 in (+37%) longer than the SEAT Ibiza.

The width at the narrowest point is 4.3 in (+11%) greater in the GLC, and the width of the trunk opening is even 8.7 in (+25%) larger than in the Ibiza. In contrast, the SEAT Ibiza has a trunk depth from the loading edge to the trunk floor that is 7.5 in (+1800%) greater than the GLC.

Impact on Usability

Due to the significantly greater cargo length (both with seats folded and upright), the GLC is better suited for long items like skis, furniture boards, or bulky bags: they can be laid flatter and further back without having to awkwardly stow the seats.

The greater narrowest width and especially the much wider trunk opening make loading wider or irregularly shaped items (strollers, boxes, furniture parts) easier.

The Ibiza has a significantly greater depth between the loading edge and the trunk floor — creating a lower cargo floor (a "trunk well"). This can provide more usable volume for taller, upright items and prevents light objects from shifting as easily in corners.

At the same time, the deep cargo floor makes it harder to pull out heavy items: instead of sliding them over a flat surface, they must be lifted out of a deeper recess. However, the overall narrower width and smaller opening limit the size of wide or long items, even if the depth offers volume.

Specifically: those who regularly transport long or wide loads (furniture, long sports equipment, larger suitcases) will notice clear advantages in the GLC.

Those who mainly carry small to medium-sized shopping or bulky but rather tall items and value deeper storage space can manage with the Ibiza — but must accept compromises in width and length.