Trunk comparison: Volvo XC60 vs VW ID.3

Key Differences
Clear differences emerge in the ratio of length, width, and loading access: The Volvo XC60 offers +9.8 in (16%) more usable length with folded seats than the VW ID.3 and +6.7 in (22%) more length with the front seats upright.
The width of the Volvo's trunk opening is also significantly larger: +6.3 in (17%) compared to the ID.3. Conversely, the VW ID.3 has a significantly greater depth between the loading edge and trunk floor: +6.3 in (1500%) — meaning the interior floor lies much lower than in the Volvo.
Impact on Practical Use
These differences noticeably affect everyday use. The longer cargo space of the Volvo (both with folded seats and with the front row upright) makes it more practical for long items like slats, skis, or disassembled furniture: they can be laid in more easily and flatter.
The wider trunk opening of the Volvo facilitates loading and unloading wider or bulky items and reduces maneuvering when sliding in boxes or furniture parts.
The deeper trunk floor of the ID.3 means more volume in depth and is advantageous when placing items deeper in the cargo area (more storage space below the loading edge).
At the same time, the higher loading edge of the ID.3 (+2 in) and the greater depth distance mean that heavy cargo requires more lifting effort or must be lowered from a greater height. For frequent loading of heavy, flat loads (e.g., electronic devices), the lower loading edge area of the Volvo is more practical.
The slightly narrower spot in the ID.3's trunk (Volvo +3.9 in at the narrowest point) can limit storing very wide items, even though this difference is close to the 10% mark. Smaller differences like the 0.4 in higher opening height in the ID.3 are hardly relevant in practice.
Conclusion: For transporting long and wide items, the Volvo XC60 is the more practical choice. The VW ID.3 offers more volume in depth due to the significantly lower cargo floor but requires more effort when loading because of the higher loading edge.