Trunk comparison: VW T-Cross vs VW Tiguan Allspace

Key Differences
The VW Tiguan Allspace offers significantly more cargo length when seats are folded down: +17.7 in (≈31%) compared to the T-Cross. The advantage is even more pronounced when the first row remains upright: the Tiguan Allspace has +18.1 in (≈70%) more cargo space here.
The width of the trunk opening is +6.3 in (≈16%) larger on the Tiguan Allspace, while the narrowest interior width is the same on both models.
In contrast, the VW T-Cross has a larger usable trunk space +7.5 in (≈40%) with the seats upright and a significantly greater vertical/recess depth between the loading edge and trunk floor: +6.3 in (≈1500%) compared to the Tiguan Allspace.
Impact on Usability
For transporting long items with folded seats, the Tiguan Allspace is superior: the longer cargo floor and wider opening make loading long or bulky parts easier. Especially when the front seats are not to be adjusted (first row upright), the Tiguan Allspace offers massively more usable length.
The T-Cross scores in everyday scenarios with all seats in use: it then offers the longer trunk length, which pays off for luggage, shopping, or strollers.
The significantly greater depth (loading edge → trunk floor) in the T-Cross creates a "recess" where cargo sits deeper and more securely — this increases stacking safety for bulky but not too long items.
However, a deeper recess can make lifting heavy loads somewhat less practical because more distance to the loading edge must be overcome.
The wider trunk opening on the Tiguan Allspace facilitates loading wider items; this has less impact on the tightest passages inside since the narrowest interior width is the same on both models.
Smaller differences like the slightly higher trunk opening (+0.8 in) or the higher loading edge of the Tiguan (+2.4 in, ≈8%) are noticeable in everyday use but less relevant than the above differences over 10%.
Summary
Those who frequently transport long or wide items and want to vary seat configurations are better served by the Tiguan Allspace. Those who regularly travel with full occupancy and value a deep cargo floor for secure stacking benefit more from the T-Cross.