Trunk comparison: Jeep Renegade vs Seat Ibiza

Key Differences (>10%)
The Jeep Renegade offers +3.5 in (+13%) more trunk length with the first row of seats upright than the SEAT Ibiza. This means longer items can be transported lying down without folding the seats.
When loading and unloading, the Renegade also scores with a wider trunk opening of +3.9 in (+11%), making it easier to slide in wide boxes or furniture.
The SEAT Ibiza, on the other hand, has a significantly greater trunk depth (loading edge to trunk floor) of +2 in (+36%), providing more usable space in depth/vertical below the loading edge.
Implications for Practical Use
For users who frequently need to transport longer or wider items (e.g., boards, skis, wide moving boxes), the Renegade is more practical in everyday use: the additional interior length with seats upright and the larger opening reduce the need to fold seats and simplify loading wide items.
However, the Renegade’s loading edge is higher (+2.8 in), making heavy lifting somewhat more strenuous.
The Ibiza is better suited when a deeper, stackable cargo area is important: the greater depth creates more volume below the loading edge, ideal for crates or bulky items that should lie lower. Together with the lower loading edge (the Renegade sits 2.8 in higher), loading heavy loads is easier in the Ibiza.
Other, smaller differences: with seats folded down, the Renegade has slightly more length (+4.7 in / 9%), the trunk opening height is +2.8 in (9%) higher in the Renegade, and the narrowest interior width is only marginally larger in the Ibiza (+1.2 in / 3%).
Overall: Renegade = advantage in width and length without folding seats; Ibiza = advantage in depth, stackability, and easier lifting due to lower loading edge.