Trunk comparison: Seat Ibiza vs VW Taigo

Key Differences
The VW Taigo offers significantly more usable length when loading: with the seats folded down, the Taigo's trunk is +5.9 in (11%) longer, and with the first row of seats upright, it is even +5.5 in (21%) longer than the Seat Ibiza's.
Additionally, the width of the trunk opening on the Taigo is +4.3 in (13%) larger than on the Ibiza.
Smaller differences: the height of the trunk opening is 0.8 in (3%) higher on the Ibiza, the depth of the trunk (loading edge → floor) is 0.4 in (5%) greater on the Taigo, and the Taigo's loading edge sits 2.4 in (9%) higher above the road. The width at the narrowest point is the same on both models.
Implications for Usability
The larger length dimensions of the Taigo practically mean: longer items (e.g., skis, slats, furniture parts) can be transported more easily with the seats folded down, and even with normal seat use, more luggage or bulky cargo fits inside.
The wider trunk opening makes it easier to maneuver wide or awkward items (e.g., large suitcases, boxes, strollers) in and out because less pushing and turning is required at the opening.
The slightly higher loading edge of the Taigo (2.4 in) makes loading heavy items somewhat more strenuous than in the Ibiza; this disadvantage is noticeable when frequently lifting heavy loads but remains below the 10% mark in percentage terms.
The slightly higher opening on the Ibiza (+0.8 in) helps with very tall items but is a minor effect.
Overall, the Taigo is noticeably more practical for users who regularly transport long or wide loads, while the Ibiza can be minimally more comfortable for low-stress, frequent loading and unloading (due to the slightly lower loading edge).