Trunk comparison: Audi Q7 vs Mazda Mazda CX-5

Key Differences
The Audi Q7 offers a cargo space length that is 13 in (≈19%) longer with the seats folded down than the Mazda CX‑5 and also maintains an advantage with the first row of seats upright, having a cargo space length 9.1 in (≈24%) longer.
The width of the trunk opening is 5.9 in (≈14%) larger in the Q7, which makes loading wider items easier.
In contrast, the Mazda CX‑5 has a significantly greater depth between the loading edge and the trunk floor: +2 in, stated as a +400% advantage over the Q7. Smaller differences (under 10%) include the Mazda's trunk opening being 1.6 in higher (+5%), the Q7's loading edge being 0.8 in higher above the ground (+3%), and the narrowest width in the Q7 being only 1.2 in wider (+3%).
Impact on Usability
The longer cargo areas of the Audi Q7 (each with ≈19% and ≈24% advantage) make it significantly better suited for long loads such as skis, long boards, furniture profiles, or multiple large suitcases – both with folded and upright seats.
The 5.9 in wider trunk opening in the Q7 additionally facilitates sliding and maneuvering bulky or wide items (strollers, large boxes, furniture parts).
The greater depth in the Mazda CX‑5 (+2 in / significant percentage advantage) means the interior floor lies deeper below the loading edge. Practically, this means smaller items can disappear into a deeper recess, creating more usable vertical space below the loading edge.
At the same time, bending down/reaching the floor and lifting heavy loads out of the recess can be somewhat less convenient.
The slightly higher opening height of the Mazda (+1.6 in) helps when inserting tall items through the opening, while the slightly lower loading edge height of the Mazda makes lifting heavy loads a bit easier (Q7 loading edge is +0.8 in higher).
In summary: For transport tasks requiring length and width (long moldings, wide furniture pieces, many suitcases), the Audi Q7 is the more practical choice.
For applications where a deep floor pan, easily accessible storage space below the loading edge, and a slightly higher opening are advantageous (organized cargo, groceries, everyday usability), the Mazda CX‑5 offers specific benefits.