Trunk comparison: Fiat Panda vs Peugeot 308 SW 3-row

Key Differences and Impact on Usability
The most significant differences concern trunk length, trunk depth, loading edge height, and the width of the loading opening. These differences affect which loads are easier to transport and how practical the vehicles are in everyday use.
Trunk length: With maximum cargo volume and seats folded down, the Peugeot 308 SW is 13.4 in (31%) longer than the Fiat Panda. When only the first row of seats remains upright (i.e., front seats occupied, rear space for long items), the Peugeot even has an advantage of 21.3 in (100%).
In contrast, the Fiat Panda offers a longer trunk by 7.5 in (54%) with all seats fully upright. Practically, this means: For long or very bulky loads with folded seats, the Peugeot is clearly better suited; for everyday use with all seats occupied (e.g., family plus luggage), the Panda offers more usable cargo space.
Trunk depth and loading edge height: The trunk depth (distance from loading edge to trunk floor) is 5.5 in (350%) greater in the Fiat Panda, while the Panda’s loading edge is 5.1 in (23%) higher above the road surface.
This has two opposing effects: the deeper loading floor of the Panda increases the interior height of the cargo area and better prevents smaller items from shifting, making the interior space more "deeply" usable.
However, the higher loading edge increases the effort required to lift heavy items in. The Peugeot has a lower loading edge (easier loading of heavy items) but less of a "recessed" loading floor.
Width of the loading opening: The loading opening of the Peugeot is 5.1 in (13%) wider than that of the Panda, which facilitates loading wider or bulkier items. The narrowest interior width of both trunks is the same; thus, the Peugeot’s advantage is limited to the entry width of the opening.
The Peugeot’s opening height is 0.4 in higher, which is negligible and hardly affects practical use.
In summary: Those who frequently transport long or wide items and often fold seats down benefit from the Peugeot 308 SW (more length, wider opening, lower loading edge).
Those who often travel with all seats occupied and need a deeper, better-protected cargo floor (e.g., for luggage when fully loaded) will find the Fiat Panda the more practical solution—albeit at the cost of greater lifting effort when loading.