Trunk comparison: Mazda Mazda CX-5 vs Peugeot 3008

Key Differences
The most noticeable difference lies in the depth of the trunk (loading edge to trunk floor): the Peugeot 3008 has a value that is 2.4 in (+120%) greater than the Mazda CX‑5. All other specified dimensions are significantly smaller and under 10% (length with seats folded down: +1.2 in / 2% in favor of the Mazda; length with front seats upright: +1.2 in / 3% in favor of the Peugeot; height of the trunk opening Mazda +0.4 in / 1%; loading edge height Peugeot +1.6 in / 5%; narrowest width and opening width Mazda each +1.6 in / 4%).
What are the practical implications?
The significantly greater depth in the Peugeot creates a notably deeper cargo space below the loading edge. This increases the usable vertical volume and makes it easier to accommodate taller or bulkier items that would otherwise extend beyond the loading edge.
Although the Peugeot's loading edge is 1.6 in higher above the road, the trunk floor lies slightly lower overall due to the 2.4 in greater depth: the values indicate that the Peugeot's trunk floor is about 0.8 in lower above the road than the Mazda's.
Practically, this means that despite the higher loading edge, lifting heavy items is not necessarily more difficult because the deeper trunk floor reduces the lifting height.
The Mazda, on the other hand, offers +1.6 in more width at the narrowest point and at the opening, as well as a marginally longer folded-down loading length (+1.2 in).
This makes the Mazda advantageous when loading wider or flat items (e.g., furniture panels, wide boxes) and facilitates maneuvering bulky cargo through the wider opening.
In summary: the Peugeot scores with significantly more depth and thus more vertically usable space; the Mazda is better in width and opening size for wide or flat cargo. For frequent transport of tall or bulky items, the Peugeot is more practical; for wide, bulky parts, the Mazda is better suited.