Trunk comparison: Hyundai i10 vs Seat Ibiza

Key Differences
The SEAT Ibiza offers significantly more usable loading length: With the seats folded down, the trunk of the Ibiza is +9.1 in (≈19%) longer, and with the front row upright, even +8.3 in (≈45%) longer than the Hyundai i10. All other dimensions are only in the single-digit percentage range: The trunk opening height is the same, the depth (loading edge → trunk floor) of the Ibiza is slightly larger by +0.4 in (≈6%), the loading edge of the i10 is +0.4 in higher above the ground, the narrowest width of the trunk is +1.6 in (≈4%) larger in the i10, and the opening width in the i10 is +0.8 in (≈2%).
Impact on Usability
The significantly longer loading area of the SEAT Ibiza is the most important practical advantage: With the seats folded down, much longer items can be transported (e.g., long furniture parts, slats, or bulky boxes), and with the front row upright, the Ibiza retains significantly more usable cargo space for luggage or shopping — making it more flexible in everyday use and occasional transport tasks than the i10. For those who frequently need to carry long or bulky loads, the Ibiza is noticeably better suited.
The Hyundai i10, on the other hand, scores with marginally larger width dimensions at the narrowest point and at the opening (+1.6 in and +0.8 in respectively), which can slightly ease loading very wide but not particularly deep items.
However, these differences are small and have much less practical impact than the length-related advantages of the Ibiza. Likewise, the differences in loading edge height and trunk depths (each ≈0.4 in and ≈6%) are negligible for daily usability.