Trunk comparison: BMW X1 vs Ford Focus

Main Differences
There are three clear differences in the cargo space: The BMW X1 offers a longer load floor with the front seats upright than the Ford Focus (+5.1 in / +17 %).
The trunk opening of the Ford Focus is higher than that of the X1 (+3.1 in / +11 %). And the depth of the trunk (distance from loading edge → trunk floor) is significantly greater in the Focus than in the X1 (+5.9 in / +500 %).
Other differences are smaller: with the rear seats folded down, the X1 is only slightly longer (+3.5 in / 6 %), the loading edge of the X1 is minimally higher (+0.8 in / 3 %), and the narrowest width of both trunks is the same. The width of the X1's trunk opening is slightly larger (+2.8 in / +7 %).
Impact on Usability
The longer load floor in the BMW X1 with the front seats upright (+17 %) makes it more practical for longer items that cannot be placed across the interior (e.g., long building materials, skis without vertical storage).
Those who regularly transport long, flat loads have an advantage in the X1 as long as the seats are not folded down.
The Ford Focus scores with vertical space and easier loading: The higher trunk opening (+11 %) and especially the significantly greater depth of the cargo area (+5.9 in / +500 %) allow for accommodating bulkier or taller items behind the loading edge.
This makes the Focus advantageous for bulky, tall, or stacked cargo. The larger opening height also facilitates loading and unloading tall items.
Practically, this means: For frequent transport of long, flat loads, the X1 is better suited; for bulky, tall, or irregularly shaped cargo and for easier vertical loading, the Focus is the more practical choice.
Smaller differences such as the 0.8 in higher loading edge of the X1 or the slightly wider opening of the X1 only marginally affect everyday usability.