Trunk comparison: Opel Corsa vs Seat Ibiza

Key Differences
The most noticeable difference is the height of the trunk opening: the SEAT Ibiza has an opening that is 3.5 in larger (+12%) than the Opel Corsa.
All other dimensions differ only slightly: the Ibiza offers +3.5 in (7%) more length with the seats folded down, +0.8 in (3%) more length with the rear seat upright, a 0.4 in (6%) greater depth (loading edge → floor), a 1.2 in (3%) wider width at the narrowest point, and a 0.8 in (2%) wider opening width.
The loading edge of the Corsa sits 0.4 in (1%) higher above the road than the Ibiza.
Impact on Usability
The 12% higher trunk opening of the Ibiza provides the greatest practical advantage: taller or bulky items (e.g., suitcases, boxes, furniture parts) can be maneuvered more easily through the opening without getting caught on the upper edge.
This makes the Ibiza noticeably more practical, especially for large, tall loads.
The smaller differences (length, depth, widths) slightly increase the cargo volume of the Ibiza but are usually only relevant in everyday use for specific loads (longer items with the rear seat folded down, slightly wider boxes at the narrowest point).
The 0.4 in lower loading edge of the Ibiza marginally eases lifting heavy loads; for normal groceries or luggage, these differences are hardly noticeable.
Conclusion: For transport-intensive use, especially with tall or bulky items, the SEAT Ibiza is the more practical choice due to its significantly higher opening. For normal everyday use, however, the differences are minor.