Trunk comparison: Kia Stonic vs VW T-Roc

Key Differences (>10%)

With the rear seat folded up, the trunk of the VW T‑Roc is 3.5 in (13%) longer than that of the Kia Stonic. The depth of the trunk (loading edge to floor) is 1.6 in (22%) greater in the T‑Roc. The width of the T‑Roc's trunk opening is 5.5 in (14%) larger than that of the Stonic.

Impact on Usability

The greater length with the rear seat upright makes the T‑Roc more practical for longer items without folding the seats down (e.g., skis, long boxes, or panels).

The significantly greater depth means more usable height inside: items can be better stacked or placed higher, making the volume feel noticeably more generous. The wider opening of the T‑Roc makes loading bulky or wide cargo easier and reduces bends when sliding large items in.

Smaller differences: With seats fully folded down, the T‑Roc is 4.3 in (8%) longer, which is below the 10% threshold and less notable. The T‑Roc's trunk opening is 2.8 in (9%) higher—a benefit when lifting items in, but also just under 10%.

The narrowest interior width is 1.6 in (4%) larger in the Kia, which is only relevant in practice for very narrow interior dimensions. The loading edge height is the same for both models.

Conclusion: Those who frequently transport long, tall, or wide items will find the VW T‑Roc offers more practical advantages. The Kia Stonic provides only marginal benefits in very tight interior dimensions; for everyday loading practicality, the T‑Roc is superior.