Trunk comparison: Audi Q5 vs Skoda Elroq

Core Differences
The Audi Q5 has a trunk that is +5.9 in (19%) longer with the first row of seats upright than the Škoda Elroq. This means: with all rear seats up, the Audi can accommodate significantly more length for long items (e.g., skis, slatted frames, long boxes) without folding down the seats.
The depth of the trunk (loading edge to trunk floor) is +2.8 in (700%) greater in the Audi Q5. Practically, this means: the Audi offers more vertical storage space, allowing for taller or stacked cargo to be better accommodated and significantly increasing usable volume.
Other Differences and Their Impact
The width of the trunk opening is +10% larger in the Audi — a noticeable but not more than 10% advantage that makes loading wider items easier.
The loading edge of the Audi is +2 in (7%) higher above the road; this makes lifting heavy loads somewhat more strenuous despite the larger interior. At the narrowest point, the trunk width in the Audi is only slightly (+1.2 in, 3%) larger.
The Škoda Elroq offers a +0.4 in (1%) longer cargo floor with the seats folded down — practically irrelevant in everyday use.
Conclusion — Implications for Usability
If you often need to transport long or tall cargo, the Audi Q5 offers clear advantages: more length with seats upright and significantly more depth/vertical space make transporting long and stackable items easier.
However, those who frequently load and unload heavy items should consider the higher loading edge of the Audi: lifting is more strenuous than in the Škoda.
Wider items are somewhat easier to load in the Audi thanks to the larger opening, while the Elroq offers hardly any advantages except for a negligible 0.4 in length with folded seats.