Trunk comparison: Mercedes Benz GLB vs Seat Ibiza

Comparison of trunk dimensions for the Mercedes Benz GLB and Seat Ibiza

Summary of the Biggest Differences

When comparing the trunk dimensions, four differences stand out clearly: The Mercedes‑Benz GLB offers a 14.2 in (26%) longer load floor with the seats folded down and a 10.6 in (40%) longer trunk with the first row of seats upright compared to the SEAT Ibiza.

The width of the GLB's trunk opening is 7.1 in (20%) larger.

In contrast, the SEAT Ibiza has a significantly greater depth between the loading edge and the trunk floor: +2.8 in (58%) compared to the GLB.

Smaller differences (under 10%) concern the height of the opening (+2.4 in / 7% in favor of the GLB), the width at the narrowest point (+2.4 in / 6% in favor of the GLB), and the loading edge height (+1.2 in / 4% in favor of the GLB) and are not highlighted here.

Practical Implications of These Differences

The GLB clearly has the advantage when it comes to long or wide cargo: the significantly longer load floors (both with folded seats and with the seat row upright) and the wider opening make loading long goods, furniture parts, or larger boxes easier and more ergonomic.

For families or users who frequently need to transport bulky items, this results in greater flexibility and better utilization of the cargo space.

The deeper trunk of the SEAT Ibiza, on the other hand, means more usable vertical height directly behind the loading edge.

This is practical for stacking suitcases, bags, or for tall items that require more space in depth, even though the overall space in length and width is limited. In summary: the Ibiza is better suited for vertically bulky, compact cargo; the GLB for longer and wider loads.

Small differences like the slightly higher loading edge of the GLB (+1.2 in) make lifting heavy loads a bit more strenuous, while GLB advantages in opening width and length facilitate loading bulky parts.

The choice therefore depends on the typical usage profile: frequent transport of long or bulky items — GLB; predominantly compact, stackable cargo with a lower vehicle height and easier lifting — Ibiza.