Trunk comparison: Jeep Avenger Electric vs Seat Ibiza
Main Differences
In a direct comparison, two differences are clearly greater than ten percent: The depth of the trunk (loading edge to trunk floor) of the SEAT Ibiza is significantly deeper by +3.1 in (+73 %) than the Jeep Avenger Electric, and the width of the trunk opening of the Jeep Avenger Electric is +4.3 in wider (+13 %) than that of the SEAT Ibiza.
These two points are the most relevant for practical use.
All other measured dimensions are below the 10-percent mark: the usable volume with folded seats is +2.8 in (5 %) in the Ibiza, with the first row upright +0.4 in (1 %), the height of the trunk opening +1.2 in (4 %), the loading edge height of the Jeep +1.2 in (4 %), and the narrowest trunk width of the Ibiza is +3.5 in (10 %) larger (the latter is exactly at 10 % and is considered close to the limit).
Impact on Usability
Trunk Depth (SEAT Ibiza significantly deeper): The 73 % greater depth of the Ibiza means more usable volume in the vertical direction — the vehicle can accommodate significantly more height or "depth" of cargo (e.g., tall boxes, larger luggage, or bulky items that can be pushed further forward).
Practically, this means: when fully loaded, more can be stacked in the Ibiza, and items sit lower in the cargo area, which improves load stability. Disadvantage: deeper loading floors can be somewhat less convenient for reaching in and lifting, especially if the loading edge were higher (which it is not here).
Width of the Trunk Opening (Jeep Avenger easier for loading wide items): The 13 % wider opening of the Jeep makes it easier to load wide or bulky parts (e.g., wide furniture pieces, strollers sideways, or large suitcases).
Although the Ibiza is somewhat wider at its narrowest internal point (close to 10 %), the narrower opening can make loading these wide items more difficult or require them to be angled. For users who frequently load wide objects, the Jeep is therefore more practical despite the overall lesser depth.
Other practical effects: The approximately 1.2 in lower loading edge of the Ibiza (only about 4 %) makes lifting loads marginally easier — this is noticeable but not a dominant factor compared to depth and opening width.
The slightly larger length dimensions of the Ibiza with folded seats (+5 %) improve volume minimally but are hardly decisive in everyday use.
Conclusion: Those seeking more usable depth and thus better stacking and interior capacity for taller cargo are better served by the SEAT Ibiza. Those who frequently need to load and unload wide, bulky items benefit from the larger trunk opening of the Jeep Avenger Electric.