Trunk comparison: Ford Focus vs Peugeot 308 SW 3-row

Key Differences
The models differ significantly in trunk dimensions and loading geometry: When all seats are folded down, the Ford Focus has only slightly more space (+3.9 in / 7%) than the Peugeot.
However, when only the front seats are upright, the Peugeot offers significantly more cargo space (+12.2 in / 40%). When all passengers are seated (all seat rows upright), the Ford, on the other hand, has considerably more trunk space (+16.5 in / 120%).
Regarding the loading opening and handling of cargo, the Peugeot has advantages: The opening is higher (+3.5 in / 11%) and the width of the trunk opening is larger (+5.1 in / 13%) than in the Ford.
In contrast, the depth from the loading edge level to the trunk floor is significantly greater in the Ford (+5.5 in / 350%) and the loading edge overall sits higher above the road (+5.1 in / 23%). At the narrowest point, the interior widths of both models are the same.
What are the implications of these differences for usability?
For transport tasks with folded seats, both cars are similar; the Ford has only a small advantage (+7%), practically no noticeable difference.
However, if you often load with only the front seats upright (large, flat loading area with folded rear rows), the Peugeot is clearly advantageous: more volume and a larger, higher opening make it easier to stow bulky or tall items.
If, on the other hand, you regularly travel with five people or with all seat rows occupied and still need to carry luggage in the trunk, the Ford is the more practical choice: the significantly longer usable trunk space with full seating (+120%) offers real additional storage capacity.
When it comes to loading and unloading heavy or bulky items, much speaks in favor of the Peugeot: lower loading edge combined with a higher and wider opening makes lifting in easier and provides more room for wide parts.
The Ford offers more depth behind the loading edge but has a higher loading edge above the floor, which makes handling heavy loads more difficult.
Practical Conclusion
Choose the Peugeot 308 SW (3-row) if you often transport large or tall cargo with folded seat rows or frequently load bulky items at a low loading edge. Choose the Ford Focus if you more often travel fully occupied and still need more usable trunk space behind all seat rows.