Trunk comparison: Peugeot 3008 vs VW T-Cross

Key Differences
The Peugeot 3008 offers a significantly larger cargo area in length: with the seats folded down, the trunk is 8.7 in (15%) longer, and with the front row upright, it is even 13 in (50%) longer than the VW T-Cross.
The height of the Peugeot's trunk opening is 3.1 in (11%) greater, allowing more vertical clearance when loading.
The loading edge of the Peugeot is 3.5 in (13%) higher above the road. In contrast, the VW T-Cross has a significantly greater trunk "depth" (distance from loading edge to trunk floor): it is 2 in (45%) deeper here than the Peugeot.
The width differences (narrowest point +0.4 in / opening width +1.6 in in favor of the Peugeot) are negligible at 1–4% each.
Impact on Usability
Due to the significantly greater length and higher opening of the Peugeot, it is more practical for long or bulky cargo (e.g., slats, furniture parts, larger boxes). The additional length with the front bench upright (50%) makes it more flexible when only the second row is used or partially folded down.
The higher loading edge of the Peugeot (13%) means more lifting when loading heavy items — loading bulky or heavy loads is ergonomically more strenuous.
Here the VW T-Cross scores points: the lower loading edge makes lifting easier, and the significantly deeper trunk well (45%) allows smaller items to "sink" and lowers the cargo's center of gravity, which can be advantageous when securing loads and for driving behavior.
In short: For length and maximum payload with bulky items, the Peugeot 3008 is better suited; for comfortable lifting, secure storage of smaller items, and more ergonomic loading/unloading, the VW T-Cross has the advantage. Width and opening width are practically identical and hardly play a role in everyday use.