Trunk comparison: BMW iX1 vs BMW X2

Key Differences
The trunk dimensions of both models are overall similar: the total length with the seats folded down differs by only +1.6 in (2%) in favor of the X2, and in the normal state (first row upright) by +1.2 in (3%) also favoring the X2. The width at the narrowest point is the same, while the width of the trunk opening is +3.9 in (10%) larger on the iX1 than on the X2.
Two values differ significantly: The trunk depth (distance from loading edge to trunk floor) is +2.8 in (+350%) greater on the X2 than on the iX1. Additionally, the loading edge of the X2 is +3.1 in (+11%) higher above the road than on the iX1.
Implications for Everyday Use
The much greater trunk depth of the X2 means the interior offers significantly more vertical space — larger or stackable cargo can be accommodated better. This is advantageous for bulky, tall items or when stacking suitcases/backpacks.
In contrast, the higher loading edge of the X2 increases the effort required to load and unload heavy items: lifting is onto a higher step, making handling more difficult for frequent or heavy loading.
Here, the iX1 scores with a lower loading edge — easier and more ergonomic loading — as well as a wider opening (3.9 in more), which facilitates sliding in wider items.
Since the length differences (2–3%) and the slightly higher trunk opening of the iX1 (+2.4 in / 9%) are minor, they usually go unnoticed in practice. The key trade-off is: more usable interior depth (X2) versus easier, more ergonomic loading/unloading and wider opening (iX1).
Practical Recommendation
Those who frequently transport tall or stackable cargo and value a larger interior are better served by the X2. Those who often load heavy or wide items alone and value a lower loading edge and larger opening should prefer the iX1.