Trunk comparison: BMW 3 Series Touring vs BMW iX1

Key Differences (highlighted: >10%)

The BMW 3 Series Touring offers a 3.9 in longer trunk (+11%) with rear seats upright compared to the BMW iX1. The iX1's loading edge is 4.7 in higher above the road (+20%) than the 3 Series Touring.

The measured depth from the loading edge to the trunk floor is 0.4 in greater (percentage +100%) in the iX1 — absolutely very small, but proportionally noticeable.

Other differences: with seats folded down, the 3 Series Touring is 5.1 in (8%) longer; trunk opening height is the same; the narrowest width is 2 in (5%) larger in the iX1, and the opening width is 3.5 in (9%) larger.

Impact on Usability

The longer cargo floor of the 3 Series Touring with rear seats upright makes it more practical for long items (skis, slats, long boxes) when passengers remain in the back seats. In the iX1, long items are more restrictive when seats are occupied.

The 4.7 in higher loading edge of the iX1 significantly increases the effort required to lift heavy items into the vehicle. For frequent loading of suitcases, boxes, or bulky items, the 3 Series Touring is therefore more convenient — especially for older or physically limited users.

The 0.4 in greater depth of the iX1 is hardly noticeable in practice (the percentage figure is misleading due to the small absolute dimensions).

Likewise, the slightly larger interior width at the narrowest point (+2 in) and the wider opening (+3.5 in) of the iX1 are advantageous for wide or bulky parts but only bring moderate practical improvements compared to the 3 Series Touring.

Conclusion: Those who frequently transport long items with the rear seats occupied and prefer lower loading edges are better served by the 3 Series Touring.

Those who prefer somewhat wider openings/interior dimensions and can live with a higher loading edge will find slight advantages in width with the iX1, but no significant practical benefit in cargo volume.