Trunk comparison: Kia Ceed vs Mercedes Benz GLB

Key Differences

The Mercedes‑Benz GLB offers significantly more cargo space in several important dimensions: With the seats folded down, the GLB's trunk is 9.1 in (≈15%) longer than that of the Kia Ceed. With the first row of seats upright, the difference is even greater: the GLB is 6.3 in (≈20%) longer.

Additionally, the height of the trunk opening in the GLB is 5.1 in (≈17%) higher than in the Ceed. The other measurements differ only slightly: trunk depth +0.4 in (≈9%), loading edge height +2.4 in (≈9%), narrowest width +0.8 in (≈2%), and opening width +2.4 in (≈6%).

Implications for Usability

The greater length dimensions mean that the GLB is significantly better suited for long items. With the seats folded down, longer furniture parts, slatted frames, bicycles without disassembly, or longer bulky goods can be transported in the GLB.

Even when fully loaded with passengers in the front row, the GLB offers more usable cargo space for suitcases, shopping bags, or sports equipment.

The higher trunk opening makes it easier to load tall or bulky items because less tilting or pushing is required. This is practical for boxes, plants, or equipment that require more height.

The smaller differences (depth +0.4 in, loading edge +2.4 in, width +2 to +2.4 in) have a noticeably lesser practical effect. A loading edge that is 2.4 in higher makes lifting heavy items somewhat less comfortable but does not impact as much as the gains in length and opening height.

Overall, the GLB is the better choice if long or tall cargo is regularly transported; the Ceed remains sufficient for everyday use with more compact items and a lower loading edge.