Trunk comparison: Nissan Rogue Sport vs VW T-Roc

Key Differences
There are three notable differences in cargo volume and interior geometry: the Nissan Qashqai offers 6.7 in (≈11%) more cargo length with the seats folded down and 3.5 in (≈12%) more cargo length with the first row upright than the VW T-Roc.
In contrast, the VW T-Roc has a significantly greater trunk depth: the depth (loading edge to trunk floor) is 6.3 in (≈267%) larger than in the Qashqai.
All other differences (opening height +2.4 in/8% for the T-Roc, width at the narrowest point +1.2 in/3% for the Qashqai, opening width +0.4 in/1% for the T-Roc, loading edge height equal) are small and have limited practical impact.
Implications for Usability
The longer cargo areas in the Qashqai (about 11–12% more length each) make it more practical for long items like slats, skis, or longer boxes, because there is more straight usable length and folding the seats usually creates a longer usable surface.
For users who often transport longer goods or need as flat a cargo space as possible, the Qashqai has the advantage.
The significantly greater depth of the T-Roc (≈267% more) means more space below the loading edge and thus more usable storage volume vertically. This is advantageous when frequently loading tall or bulky but not particularly long items (large boxes, tools, camping gear).
At the same time, a deep cargo well can make handling heavy items more difficult because they must be lifted further "in" and out again. Since the loading edge height is the same for both vehicles, there is no difference when stepping onto the loading edge itself.
The minor differences in opening height and width are negligible for most everyday loading cases: a 2.4 in higher opening on the T-Roc slightly eases loading very tall items, while the few extra centimeters of width in the Qashqai are hardly noticeable.
Conclusion
Those who frequently transport long items or need a longer, straight cargo surface benefit from the Nissan Qashqai. Those who require more volume in depth and more space for tall/bulky cargo are better served by the VW T-Roc. Smaller differences in width and opening height hardly matter in daily use.