Trunk comparison: VW ID.3 vs VW T-Roc

Key Differences
The biggest differences concern the dimensions that make loading bulky or tall items easier: The height of the trunk opening of the VW T‑Roc is 4.3 in (15%) higher than that of the VW ID.3, the depth of the trunk (loading edge to trunk floor) is 2.4 in (38%) greater in the T‑Roc, and the width of the trunk opening is 6.7 in (18%) wider in the T‑Roc.
Smaller differences: the ID.3 offers a 2 in (3%) longer cargo area with the seats folded down and 0.4 in (1%) more length with the front seats upright; loading edge height and the narrowest width inside the trunk are the same in both models.
Impact on Usability
Due to the higher trunk opening (+15%) and the wider opening (+18%), the T‑Roc is significantly easier to load with wide or tall items (e.g., furniture parts, strollers, large boxes).
The greater trunk depth (+38%) means more usable interior height below the loading edge, allowing bulky or voluminous cargo to be better recessed in the trunk and less protruding above the loading edge.
Practically speaking: For users who regularly need to transport wide, tall, or awkward items (e.g., moving, sports equipment, larger shopping), the T‑Roc is clearly advantageous.
The ID.3, on the other hand, offers only marginally more cargo space in length with the seats folded down (+3%), which only provides a small advantage for very long, flat items.
Since loading edge height and the narrowest interior width are the same, lifting/hoisting and maneuvering through tight spots when loading remain similarly challenging in both models.