Trunk comparison: Peugeot 308 SW 3-row vs VW ID.4
Key Differences
The models differ significantly depending on the seating configuration: The VW ID.4 offers a cargo space that is 9.4 in (17%) longer with the seats folded down than the Peugeot 308 SW (3-row), and when all seats are upright, the ID.4 is even 23.2 in (169%) longer.
In contrast, the Peugeot has a cargo space that is 5.5 in (15%) longer than the ID.4 in the configuration with the first row of seats upright.
Other relevant differences: The trunk opening height is 3.5 in (11%) higher in the Peugeot, while the trunk depth (distance from loading edge to floor) is 2.4 in (150%) greater in the ID.4, and the loading edge of the ID.4 is overall 7.1 in (32%) higher above the road.
The narrowest trunk width is the same; the opening width of the Peugeot is only slightly (+2.4 in / 6%) larger.
Impact on Usability
For long cargo with seats folded down, the ID.4 is advantageous: the additional 9.4 in make it easier to load long items. When all seats are upright (i.e., full occupancy), the ID.4 offers significantly more trunk space with 23.2 in more length — practical for trips with multiple passengers.
The Peugeot scores in the special configuration with the first row upright: its additional 5.5 in length is useful when you want to remain seated in the front but still accommodate longer cargo (e.g., skis or long pipes).
The higher trunk opening of the Peugeot (+3.5 in) makes it easier to load tall or bulky items, while the ID.4 offers more volume due to the greater interior depth behind the loading edge.
However, the ID.4’s loading edge, which is 7.1 in higher, makes lifting heavy loads into or out of the trunk more difficult; those who frequently load heavy items benefit from the Peugeot’s lower loading edge height.
Since the narrowest width is the same and the Peugeot’s opening width is only minimally larger, width restrictions are practically irrelevant for both models.
Conclusion: The ID.4 is the more practical choice if you need maximum length and interior depth — especially with full occupancy or fully folded seats.
The Peugeot 308 SW (3-row) is better if easy loading and unloading (lower loading edge, higher opening) and certain seat/cargo combinations with the first row upright are important in everyday use.