Trunk comparison: Audi Q5 vs Nissan Rogue Sport

Key Differences
The most noticeable difference is in the depth of the trunk (loading edge to trunk floor): The Audi Q5 is 0.8 in or about 33% deeper than the Nissan Rogue Sport here. All other measured deviations are in the range of 1–9% and are therefore relatively minor.
Other measured values and directions of differences (less than 10%): The Audi Q5 has +0.4 in longer cargo space with folded seats and +3.1 in (≈9%) more length with the first row upright.
The width of the trunk opening is +0.4 in on the Audi, while the narrowest width inside the trunk is +0.4 in larger on the Rogue Sport. The trunk opening of the Rogue Sport is +0.4 in higher, and its loading edge is +1.2 in higher above the road than on the Audi.
Impact on Usability
More depth in the Audi Q5 (≈33%): The greater depth means more usable volume between the loading edge and floor.
Practically, this means bulky or tall items can be better stored or pushed further back with the same opening size, and loading multiple stacked suitcases or boxes becomes easier. For users who frequently transport deep loads, larger boxes, or sports equipment, the Q5 is noticeably more practical.
Minor advantages of the Audi Q5 also include the 0.4 in wider opening and the 1.2 in lower loading edge; combined, these slightly ease sliding in and lowering heavy items.
The Rogue Sport only scores marginally with a 0.4 in higher opening height and a 0.4 in larger narrowest interior width, which in practice offers hardly noticeable benefits.
Conclusion: For regularly carrying large or deep loads, the Audi Q5 is the more practical choice due to its significantly greater depth. For normal everyday tasks, the differences are overall small and mostly negligible.